Numbers /351

How rare is 351?

351 scores 668 and sits in the Singular tier — 1 in 1,570 of all supported numbers score this high or higher. Everything below is computed from a complete analysis of all 1,000,001 numbers in range.

Number
351
Singular
Rarity Score
668
Global Percentile
Top 0.06%
Same-length rank
Top 16.3%
Among 900 3-digit numbers
Traits Detected
5

RNGdle.net’s own rarity score. Top 0.06% means that proportion of supported numbers scores at least this high. Every exact number has the same chance of being rolled. Same-length rank keeps the score and compares only numbers with 3 digits, including ties. How this differs from EP · Badge guide

Number DNA
351
Lab Observations · Descriptive Only
3 digitsOdd numberZero-freeFirst > last1, 3, 5 appear once

These notes make the number easy to read, but they add no score unless a separately counted rarity signal appears below.

Digit Profile
Length3 digits
Unique digits3
Digit sum9
Odd / even split3 / 0
Digital root9
Mathematical Properties
Composite number
8 divisors
Not a perfect square
Not a perfect cube
Not a palindrome
Rarity Drivers
5 traits detected
Three-digit numberSingular

One of only 900 three-digit numbers in range.

Range · signal frequency

+202
1 in 1,111
Triangular numberExtreme

A sum 1 + 2 + … + k for some k.

Factorization · signal frequency

+189
1 in 707
Digit sum 9Extreme

This number's digits add up to an uncommon total.

Arithmetic · signal frequency

+179
1 in 500
3 distinct digitsRare

This number uses an uncommon count of distinct digits.

Repetition · signal frequency

+73
7.91%
Harshad numberRare

Divisible by the sum of its digits.

Arithmetic · signal frequency

+24
9.54%
Rarity Explanation

Strongest signal: Three-digit number. It appears in 900 supported numbers and contributes +202 after correlation decay.

Why is 351 unusual? Only 0.06% of the 1,000,001 supported numbers receive an equal or higher rarity score. This number falls in the Singular tier. Scoring is grounded in the exact frequency of each detected trait — rarer traits carry more information and contribute more to the score.

Algorithm version 1.1.0

One digit away

One digit, +179 points.

Your number

351

Singular · Top 0.06%

Best one-digit neighbour

321

Singular · Top 0.01%

Position 2: 5 → 2 · +179 points.

Gained: Sequential descending, Digit sum 6, Semiprime.

26 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.

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Similar interesting numbers

Explore a shared pattern, a comparable score, or a mathematical relationship. Every link explains its connection to 351.

Shared patterns

171 Score 937Shares harshad number and triangular number.300 Score 861Shares harshad number and triangular number.990 Score 684Shares harshad number and triangular number.

Same length, nearby scores

630 Score 668Also 3 digits; the same rarity score.190 Score 665Also 3 digits; 3 points lower.331 Score 665Also 3 digits; 3 points lower.

Mathematical relationships

513 Score 658Same decimal digits, rotated into a different order.135 Score 479Same decimal digits, rotated into a different order.153 Score 1,012The decimal digits in reverse order.

Patterns in this number

Each of these has its own page explaining how common the pattern is and why.

Harshad Numbers

A Harshad — or Niven — number is divisible by the sum of its own digits. 18 works because 1 + 8 = 9 and 18 ÷ 9 = 2.

Triangular Numbers

A triangular number counts the dots in a triangle: 1, 3, 6, 10, 15, 21 — each one the running total 1 + 2 + … + k.
Open in the calculator Compare this number Browse all patterns See the rarest numbers