31631658952 has 8 divisors (see below), whose sum is σ = 59309360550. Its totient is φ = 15815829472.

The previous prime is 31631658941. The next prime is 31631658979. The reversal of 31631658952 is 25985613613.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26067394116 + 5564264836 = 161454^2 + 74594^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 31631658896 and 31631658905.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1976978677 + ... + 1976978692.

Almost surely, 2^31631658952 is an apocalyptic number.

It is an amenable number.

31631658952 is a deficient number, since it is larger than the sum of its proper divisors (27677701598).

31631658952 is a wasteful number, since it uses less digits than its factorization.

31631658952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953957375 (or 3953957371 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 49.

The spelling of 31631658952 in words is "thirty-one billion, six hundred thirty-one million, six hundred fifty-eight thousand, nine hundred fifty-two".