31039504164 has 36 divisors (see below), whose sum is σ = 79454152960. Its totient is φ = 10215532080.

The previous prime is 31039504121. The next prime is 31039504187. The reversal of 31039504164 is 46140593013.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 5454172 + ... + 5459859.

Almost surely, 2^31039504164 is an apocalyptic number.

It is an amenable number.

31039504164 is an abundant number, since it is smaller than the sum of its proper divisors (48414648796).

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

31039504164 is a wasteful number, since it uses less digits than its factorization.

31039504164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10914120 (or 10914115 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 31039504164 in words is "thirty-one billion, thirty-nine million, five hundred four thousand, one hundred sixty-four".