31631518052 has 12 divisors (see below), whose sum is σ = 55721748096. Its totient is φ = 15711018600.

The previous prime is 31631518021. The next prime is 31631518073. The reversal of 31631518052 is 25081513613.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26184428 + ... + 26185635.

It is an arithmetic number, because the mean of its divisors is an integer number (4643479008).

Almost surely, 2^31631518052 is an apocalyptic number.

It is an amenable number.

31631518052 is a deficient number, since it is larger than the sum of its proper divisors (24090230044).

31631518052 is a wasteful number, since it uses less digits than its factorization.

31631518052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52370218 (or 52370216 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 31631518052 in words is "thirty-one billion, six hundred thirty-one million, five hundred eighteen thousand, fifty-two".