31080900825 has 60 divisors (see below), whose sum is σ = 62001284268. Its totient is φ = 15301353600.

The previous prime is 31080900803. The next prime is 31080900871. The reversal of 31080900825 is 52800908013.

It can be written as a sum of positive squares in 6 ways, for example, as 65464281 + 31015436544 = 8091^2 + 176112^2 .

It is not a de Polignac number, because 31080900825 - 2¹² = 31080896729 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31080900825.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 564006 + ... + 616655.

Almost surely, 2^31080900825 is an apocalyptic number.

It is an amenable number.

31080900825 is a deficient number, since it is larger than the sum of its proper divisors (30920383443).

31080900825 is a wasteful number, since it uses less digits than its factorization.

31080900825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180696 (or 1180682 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 31080900825 in words is "thirty-one billion, eighty million, nine hundred thousand, eight hundred twenty-five".