31332725 has 12 divisors (see below), whose sum is σ = 39240420. Its totient is φ = 24816000.

The previous prime is 31332701. The next prime is 31332737. The reversal of 31332725 is 52723313.

It can be written as a sum of positive squares in 6 ways, for example, as 784996 + 30547729 = 886^2 + 5527^2 .

It is not a de Polignac number, because 31332725 - 2¹⁰ = 31331701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31332694 and 31332703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3680 + ... + 8729.

It is an arithmetic number, because the mean of its divisors is an integer number (3270035).

Almost surely, 2^31332725 is an apocalyptic number.

It is an amenable number.

31332725 is a deficient number, since it is larger than the sum of its proper divisors (7907695).

31332725 is a wasteful number, since it uses less digits than its factorization.

31332725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12520 (or 12515 counting only the distinct ones).

The product of its digits is 3780, while the sum is 26.

The square root of 31332725 is about 5597.5642024009. The cubic root of 31332725 is about 315.2579561644.

The spelling of 31332725 in words is "thirty-one million, three hundred thirty-two thousand, seven hundred twenty-five".