31612859964 has 72 divisors (see below), whose sum is σ = 91364349440. Its totient is φ = 9028456992.

The previous prime is 31612859963. The next prime is 31612860023. The reversal of 31612859964 is 46995821613.

31612859964 is a `hidden beast` number, since 31 + 6 + 12 + 8 + 599 + 6 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 31612859964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31612859963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 605697 + ... + 655815.

Almost surely, 2^31612859964 is an apocalyptic number.

It is an amenable number.

31612859964 is an abundant number, since it is smaller than the sum of its proper divisors (59751489476).

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

31612859964 is a wasteful number, since it uses less digits than its factorization.

31612859964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52639 (or 52634 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 31612859964 in words is "thirty-one billion, six hundred twelve million, eight hundred fifty-nine thousand, nine hundred sixty-four".