12657551031 has 12 divisors (see below), whose sum is σ = 18341921520. Its totient is φ = 8411232480.

The previous prime is 12657551021. The next prime is 12657551041. The reversal of 12657551031 is 13015575621.

It is a happy number.

12657551031 is a `hidden beast` number, since 1 + 2 + 6 + 575 + 51 + 0 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (12657551021) and next prime (12657551041).

It is not a de Polignac number, because 12657551031 - 2⁵ = 12657550999 is a prime.

It is a super-2 number, since 2×12657551031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12657551021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2258286 + ... + 2263883.

It is an arithmetic number, because the mean of its divisors is an integer number (1528493460).

Almost surely, 2^12657551031 is an apocalyptic number.

12657551031 is a deficient number, since it is larger than the sum of its proper divisors (5684370489).

12657551031 is a wasteful number, since it uses less digits than its factorization.

12657551031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522486 (or 4522483 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The spelling of 12657551031 in words is "twelve billion, six hundred fifty-seven million, five hundred fifty-one thousand, thirty-one".