31483631688 has 128 divisors (see below), whose sum is σ = 83607552000. Its totient is φ = 9863194880.

The previous prime is 31483631653. The next prime is 31483631701. The reversal of 31483631688 is 88613638413.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 31483631688.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6245473 + ... + 6250511.

It is an arithmetic number, because the mean of its divisors is an integer number (653184000).

Almost surely, 2^31483631688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31483631688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41803776000).

31483631688 is an abundant number, since it is smaller than the sum of its proper divisors (52123920312).

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

31483631688 is a wasteful number, since it uses less digits than its factorization.

31483631688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315 (or 5311 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The spelling of 31483631688 in words is "thirty-one billion, four hundred eighty-three million, six hundred thirty-one thousand, six hundred eighty-eight".