31631605252 has 12 divisors (see below), whose sum is σ = 59613409996. Its totient is φ = 14599202400.

The previous prime is 31631605241. The next prime is 31631605303. The reversal of 31631605252 is 25250613613.

It can be written as a sum of positive squares in 2 ways, for example, as 3332291076 + 28299314176 = 57726^2 + 168224^2 .

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, 304149999 + ... + 304150102.

Almost surely, 2^31631605252 is an apocalyptic number.

It is an amenable number.

31631605252 is a deficient number, since it is larger than the sum of its proper divisors (27981804744).

31631605252 is a wasteful number, since it uses less digits than its factorization.

31631605252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608300118 (or 608300116 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 31631605252 in words is "thirty-one billion, six hundred thirty-one million, six hundred five thousand, two hundred fifty-two".