31920874083 has 24 divisors (see below), whose sum is σ = 52752211200. Its totient is φ = 18220618224.

The previous prime is 31920874039. The next prime is 31920874091. The reversal of 31920874083 is 38047802913.

31920874083 is a `hidden beast` number, since 31 + 9 + 208 + 7 + 408 + 3 = 666.

It is not a de Polignac number, because 31920874083 - 2⁸ = 31920873827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31920870083) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 217773 + ... + 333566.

It is an arithmetic number, because the mean of its divisors is an integer number (2198008800).

Almost surely, 2^31920874083 is an apocalyptic number.

31920874083 is a deficient number, since it is larger than the sum of its proper divisors (20831337117).

31920874083 is a wasteful number, since it uses less digits than its factorization.

31920874083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552271 (or 552268 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 31920874083 in words is "thirty-one billion, nine hundred twenty million, eight hundred seventy-four thousand, eighty-three".