31811671696 has 20 divisors (see below), whose sum is σ = 70440130432. Its totient is φ = 13633573536.

The previous prime is 31811671679. The next prime is 31811671711. The reversal of 31811671696 is 69617611813.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142016280 + ... + 142016503.

Almost surely, 2^31811671696 is an apocalyptic number.

It is an amenable number.

31811671696 is an abundant number, since it is smaller than the sum of its proper divisors (38628458736).

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

31811671696 is a wasteful number, since it uses less digits than its factorization.

31811671696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284032798 (or 284032792 counting only the distinct ones).

The product of its digits is 326592, while the sum is 49.

The spelling of 31811671696 in words is "thirty-one billion, eight hundred eleven million, six hundred seventy-one thousand, six hundred ninety-six".