31973448388 has 12 divisors (see below), whose sum is σ = 63946896832. Its totient is φ = 13702906440.

The previous prime is 31973448379. The next prime is 31973448421. The reversal of 31973448388 is 88384437913.

31973448388 is an admirable number.

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, 570954408 + ... + 570954463.

Almost surely, 2^31973448388 is an apocalyptic number.

It is an amenable number.

31973448388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31973448388 is a wasteful number, since it uses less digits than its factorization.

31973448388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141908882 (or 1141908880 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 58.

The spelling of 31973448388 in words is "thirty-one billion, nine hundred seventy-three million, four hundred forty-eight thousand, three hundred eighty-eight".