31375245208 has 16 divisors (see below), whose sum is σ = 61386349680. Its totient is φ = 15005551968.

The previous prime is 31375245157. The next prime is 31375245217. The reversal of 31375245208 is 80254257313.

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 3 ways as a sum of consecutive naturals, for example, 85258635 + ... + 85259002.

It is an arithmetic number, because the mean of its divisors is an integer number (3836646855).

Almost surely, 2^31375245208 is an apocalyptic number.

It is an amenable number.

31375245208 is a deficient number, since it is larger than the sum of its proper divisors (30011104472).

31375245208 is a wasteful number, since it uses less digits than its factorization.

31375245208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170517666 (or 170517662 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 31375245208 in words is "thirty-one billion, three hundred seventy-five million, two hundred forty-five thousand, two hundred eight".