31883908992 has 64 divisors (see below), whose sum is σ = 91206388560. Its totient is φ = 9810432000.

The previous prime is 31883908981. The next prime is 31883909047. The reversal of 31883908992 is 29980938813.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×31883908992² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3188509 + ... + 3198492.

Almost surely, 2^31883908992 is an apocalyptic number.

31883908992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31883908992 is an abundant number, since it is smaller than the sum of its proper divisors (59322479568).

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

31883908992 is a wasteful number, since it uses less digits than its factorization.

31883908992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6387031 (or 6387019 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 60.

The spelling of 31883908992 in words is "thirty-one billion, eight hundred eighty-three million, nine hundred eight thousand, nine hundred ninety-two".