31040635425 has 24 divisors (see below), whose sum is σ = 51325735776. Its totient is φ = 16553322240.

The previous prime is 31040635399. The next prime is 31040635433. The reversal of 31040635425 is 52453604013.

It is not a de Polignac number, because 31040635425 - 2⁶ = 31040635361 is a prime.

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, 1161817 + ... + 1188233.

It is an arithmetic number, because the mean of its divisors is an integer number (2138572324).

Almost surely, 2^31040635425 is an apocalyptic number.

It is an amenable number.

31040635425 is a deficient number, since it is larger than the sum of its proper divisors (20285100351).

31040635425 is a wasteful number, since it uses less digits than its factorization.

31040635425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42097 (or 42092 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The spelling of 31040635425 in words is "thirty-one billion, forty million, six hundred thirty-five thousand, four hundred twenty-five".