Your number, one digit away
One digit away
One change could reach Singular.
Your number
3,721
Extreme · Top 0.22%
Position 2: 7 → 3 · +199 points.
Gained: Triangular number, Digit sum 9, Descending segment, 3 distinct digits, Harshad number, Happy number, Repeated digit.
Lost: Perfect square, Digit sum 13, 4 distinct digits, Semiprime.
35 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.