31880716225 has 12 divisors (see below), whose sum is σ = 39534535600. Its totient is φ = 25502994000.

The previous prime is 31880716201. The next prime is 31880716229. The reversal of 31880716225 is 52261708813.

It is a de Polignac number, because none of the positive numbers 2^k-31880716225 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31880716229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 538126 + ... + 594424.

Almost surely, 2^31880716225 is an apocalyptic number.

It is an amenable number.

31880716225 is a deficient number, since it is larger than the sum of its proper divisors (7653819375).

31880716225 is a wasteful number, since it uses less digits than its factorization.

31880716225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78960 (or 78955 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 31880716225 in words is "thirty-one billion, eight hundred eighty million, seven hundred sixteen thousand, two hundred twenty-five".