31632767980 has 48 divisors (see below), whose sum is σ = 72500502816. Its totient is φ = 11497633280.

The previous prime is 31632767923. The next prime is 31632767983. The reversal of 31632767980 is 8976723613.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31632767983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474042 + ... + 536638.

It is an arithmetic number, because the mean of its divisors is an integer number (1510427142).

Almost surely, 2^31632767980 is an apocalyptic number.

It is an amenable number.

31632767980 is an abundant number, since it is smaller than the sum of its proper divisors (40867734836).

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

31632767980 is a wasteful number, since it uses less digits than its factorization.

31632767980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64914 (or 64912 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 31632767980 in words is "thirty-one billion, six hundred thirty-two million, seven hundred sixty-seven thousand, nine hundred eighty".