31490962722 has 54 divisors (see below), whose sum is σ = 68934125169. Its totient is φ = 10389826800.

The previous prime is 31490962721. The next prime is 31490962733. The reversal of 31490962722 is 22726909413.

31490962722 is a `hidden beast` number, since 3 + 1 + 490 + 96 + 2 + 72 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27639395001 + 3851567721 = 166251^2 + 62061^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=125481.

It is not an unprimeable number, because it can be changed into a prime (31490962721) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 113685648 + ... + 113685924.

Almost surely, 2^31490962722 is an apocalyptic number.

31490962722 is an abundant number, since it is smaller than the sum of its proper divisors (37443162447).

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

31490962722 is an equidigital number, since it uses as much as digits as its factorization.

31490962722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 31490962722 in words is "thirty-one billion, four hundred ninety million, nine hundred sixty-two thousand, seven hundred twenty-two".