Your number, one digit away

One digit away

One digit, +201 points.

Position 4: 7 → 4 · +201 points.

Gained: Fibonacci number, Digit sum 19, Harshad number, Happy number.

Lost: Alternating parity, Digit sum 22, Semiprime.

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