31982213928 has 64 divisors (see below), whose sum is σ = 91575336960. Its totient is φ = 9118017216.

The previous prime is 31982213911. The next prime is 31982213953. The reversal of 31982213928 is 82931228913.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127800 + ... + 283367.

It is an arithmetic number, because the mean of its divisors is an integer number (1430864640).

Almost surely, 2^31982213928 is an apocalyptic number.

It is an amenable number.

31982213928 is an abundant number, since it is smaller than the sum of its proper divisors (59593123032).

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

31982213928 is a wasteful number, since it uses less digits than its factorization.

31982213928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411646 (or 411642 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The spelling of 31982213928 in words is "thirty-one billion, nine hundred eighty-two million, two hundred thirteen thousand, nine hundred twenty-eight".