Your number, one digit away
One digit away
One change could reach Singular.
Your number
12,391
Exceptional · Top 2.99%
Position 4: 9 → 2 · +500 points.
Gained: Perfect square, Palindrome, Digit sum 9, 3 distinct digits, Descending segment, Harshad number, Double pair, Alternating parity, Happy number.
Lost: Digit sum 16, Prime, 4 distinct digits, Repeated digit.
44 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.