31270564164 has 96 divisors (see below), whose sum is σ = 86311814400. Its totient is φ = 8621544960.

The previous prime is 31270564153. The next prime is 31270564177. The reversal of 31270564164 is 46146507213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8429142 + ... + 8432850.

It is an arithmetic number, because the mean of its divisors is an integer number (899081400).

Almost surely, 2^31270564164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31270564164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43155907200).

31270564164 is an abundant number, since it is smaller than the sum of its proper divisors (55041250236).

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

31270564164 is a wasteful number, since it uses less digits than its factorization.

31270564164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7213 (or 7211 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 31270564164 in words is "thirty-one billion, two hundred seventy million, five hundred sixty-four thousand, one hundred sixty-four".