31292808108 has 24 divisors (see below), whose sum is σ = 73383475200. Its totient is φ = 10378518480.

The previous prime is 31292808067. The next prime is 31292808109. The reversal of 31292808108 is 80180829213.

It is a super-2 number, since 2×31292808108² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31292808108.

It is not an unprimeable number, because it can be changed into a prime (31292808109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6549708 + ... + 6554483.

It is an arithmetic number, because the mean of its divisors is an integer number (3057644800).

Almost surely, 2^31292808108 is an apocalyptic number.

It is an amenable number.

31292808108 is an abundant number, since it is smaller than the sum of its proper divisors (42090667092).

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

31292808108 is a wasteful number, since it uses less digits than its factorization.

31292808108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13104397 (or 13104395 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 31292808108 in words is "thirty-one billion, two hundred ninety-two million, eight hundred eight thousand, one hundred eight".