31808980896 has 96 divisors (see below), whose sum is σ = 104102143488. Its totient is φ = 8262071040.

The previous prime is 31808980877. The next prime is 31808980901. The reversal of 31808980896 is 69808980813.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×31808980896² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2144190 + ... + 2158973.

It is an arithmetic number, because the mean of its divisors is an integer number (1084397328).

Almost surely, 2^31808980896 is an apocalyptic number.

It is an amenable number.

31808980896 is an abundant number, since it is smaller than the sum of its proper divisors (72293162592).

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

31808980896 is a wasteful number, since it uses less digits than its factorization.

31808980896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303194 (or 4303186 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 60.

The spelling of 31808980896 in words is "thirty-one billion, eight hundred eight million, nine hundred eighty thousand, eight hundred ninety-six".