13031565426 has 24 divisors (see below), whose sum is σ = 30801882384. Its totient is φ = 3948959160.

The previous prime is 13031565409. The next prime is 13031565433. The reversal of 13031565426 is 62456513031.

13031565426 is a `hidden beast` number, since 1 + 30 + 31 + 56 + 542 + 6 = 666.

13031565426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13031565426² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32907796 + ... + 32908191.

It is an arithmetic number, because the mean of its divisors is an integer number (1283411766).

Almost surely, 2^13031565426 is an apocalyptic number.

13031565426 is an abundant number, since it is smaller than the sum of its proper divisors (17770316958).

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

13031565426 is a wasteful number, since it uses less digits than its factorization.

13031565426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65816006 (or 65816003 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 13031565426 in words is "thirteen billion, thirty-one million, five hundred sixty-five thousand, four hundred twenty-six".