31983108642 has 48 divisors (see below), whose sum is σ = 72240480000. Its totient is φ = 10214964000.

The previous prime is 31983108629. The next prime is 31983108667. The reversal of 31983108642 is 24680138913.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 227392 + ... + 340107.

It is an arithmetic number, because the mean of its divisors is an integer number (1505010000).

Almost surely, 2^31983108642 is an apocalyptic number.

31983108642 is an abundant number, since it is smaller than the sum of its proper divisors (40257371358).

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

31983108642 is a wasteful number, since it uses less digits than its factorization.

31983108642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567639 (or 567636 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

It can be divided in two parts, 31983 and 108642, that added together give a square (140625 = 375²).

The spelling of 31983108642 in words is "thirty-one billion, nine hundred eighty-three million, one hundred eight thousand, six hundred forty-two".