31086590368 has 48 divisors (see below), whose sum is σ = 63358848000. Its totient is φ = 14996246272.

The previous prime is 31086590363. The next prime is 31086590369. The reversal of 31086590368 is 86309568013.

It is a super-2 number, since 2×31086590368² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31086590363) 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, 1323753 + ... + 1347031.

It is an arithmetic number, because the mean of its divisors is an integer number (1319976000).

Almost surely, 2^31086590368 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 31086590368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31679424000).

31086590368 is an abundant number, since it is smaller than the sum of its proper divisors (32272257632).

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

31086590368 is a wasteful number, since it uses less digits than its factorization.

31086590368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24757 (or 24749 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 31086590368 in words is "thirty-one billion, eighty-six million, five hundred ninety thousand, three hundred sixty-eight".