31421080725 has 24 divisors (see below), whose sum is σ = 52023714912. Its totient is φ = 16733976000.

The previous prime is 31421080609. The next prime is 31421080753. The reversal of 31421080725 is 52708012413.

It is not a de Polignac number, because 31421080725 - 2²² = 31416886421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246247 + ... + 351396.

It is an arithmetic number, because the mean of its divisors is an integer number (2167654788).

Almost surely, 2^31421080725 is an apocalyptic number.

It is an amenable number.

31421080725 is a deficient number, since it is larger than the sum of its proper divisors (20602634187).

31421080725 is a wasteful number, since it uses less digits than its factorization.

31421080725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598357 (or 598352 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 31421080725 in words is "thirty-one billion, four hundred twenty-one million, eighty thousand, seven hundred twenty-five".