12931256 has 16 divisors (see below), whose sum is σ = 26111400. Its totient is φ = 5968224.

The previous prime is 12931253. The next prime is 12931297. The reversal of 12931256 is 65213921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12931253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62066 + ... + 62273.

Almost surely, 2^12931256 is an apocalyptic number.

It is an amenable number.

12931256 is an abundant number, since it is smaller than the sum of its proper divisors (13180144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12931256 is a wasteful number, since it uses less digits than its factorization.

12931256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124358 (or 124354 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 12931256 is about 3596.0055617310. The cubic root of 12931256 is about 234.7182741324.

The spelling of 12931256 in words is "twelve million, nine hundred thirty-one thousand, two hundred fifty-six".