31032161325 has 72 divisors (see below), whose sum is σ = 60710176800. Its totient is φ = 15027235200.

The previous prime is 31032161309. The next prime is 31032161389. The reversal of 31032161325 is 52316123013.

31032161325 is a `hidden beast` number, since 3 + 1 + 0 + 3 + 21 + 613 + 25 = 666.

It is not a de Polignac number, because 31032161325 - 2⁴ = 31032161309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2103826 + ... + 2118524.

It is an arithmetic number, because the mean of its divisors is an integer number (843196900).

Almost surely, 2^31032161325 is an apocalyptic number.

It is an amenable number.

31032161325 is a deficient number, since it is larger than the sum of its proper divisors (29678015475).

31032161325 is a wasteful number, since it uses less digits than its factorization.

31032161325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15579 (or 15571 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 31032161325 its reverse (52316123013), we get a palindrome (83348284338).

The spelling of 31032161325 in words is "thirty-one billion, thirty-two million, one hundred sixty-one thousand, three hundred twenty-five".