31084879968 has 72 divisors (see below), whose sum is σ = 88418086848. Its totient is φ = 10359228672.

The previous prime is 31084879961. The next prime is 31084879999. The reversal of 31084879968 is 86997848013.

31084879968 is a `hidden beast` number, since 3 + 1 + 0 + 8 + 487 + 99 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31084879961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1590705 + ... + 1610127.

It is an arithmetic number, because the mean of its divisors is an integer number (1228028984).

Almost surely, 2^31084879968 is an apocalyptic number.

It is an amenable number.

31084879968 is an abundant number, since it is smaller than the sum of its proper divisors (57333206880).

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

31084879968 is a wasteful number, since it uses less digits than its factorization.

31084879968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24996 (or 24985 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 31084879968 in words is "thirty-one billion, eighty-four million, eight hundred seventy-nine thousand, nine hundred sixty-eight".