31857380082 has 64 divisors (see below), whose sum is σ = 79721349120. Its totient is φ = 9342334800.

The previous prime is 31857380069. The next prime is 31857380117. The reversal of 31857380082 is 28008375813.

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 31 ways as a sum of consecutive naturals, for example, 846618 + ... + 883445.

It is an arithmetic number, because the mean of its divisors is an integer number (1245646080).

Almost surely, 2^31857380082 is an apocalyptic number.

31857380082 is an abundant number, since it is smaller than the sum of its proper divisors (47863969038).

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

31857380082 is a wasteful number, since it uses less digits than its factorization.

31857380082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730116 (or 1730110 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 31857380082 in words is "thirty-one billion, eight hundred fifty-seven million, three hundred eighty thousand, eighty-two".