31345367018688 has 84 divisors (see below), whose sum is σ = 90060264872760. Its totient is φ = 10423518944256.

The previous prime is 31345367018659. The next prime is 31345367018741. The reversal of 31345367018688 is 88681076354313.

It is a happy number.

31345367018688 is a `hidden beast` number, since 3 + 1 + 3 + 4 + 536 + 7 + 0 + 18 + 6 + 88 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64697845 + ... + 65180532.

It is an arithmetic number, because the mean of its divisors is an integer number (1072146010390).

Almost surely, 2^{31345367018688} is an apocalyptic number.

It is an amenable number.

31345367018688 is an abundant number, since it is smaller than the sum of its proper divisors (58714897854072).

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

31345367018688 is a wasteful number, since it uses less digits than its factorization.

31345367018688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129878814 (or 129878801 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 31345367018688 in words is "thirty-one trillion, three hundred forty-five billion, three hundred sixty-seven million, eighteen thousand, six hundred eighty-eight".