31713324 has 12 divisors (see below), whose sum is σ = 73997784. Its totient is φ = 10571104.

The previous prime is 31713307. The next prime is 31713373. The reversal of 31713324 is 42331713.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31713294 and 31713303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321377 + ... + 1321400.

It is an arithmetic number, because the mean of its divisors is an integer number (6166482).

Almost surely, 2^31713324 is an apocalyptic number.

It is an amenable number.

31713324 is an abundant number, since it is smaller than the sum of its proper divisors (42284460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31713324 is a wasteful number, since it uses less digits than its factorization.

31713324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642784 (or 2642782 counting only the distinct ones).

The product of its digits is 1512, while the sum is 24.

The square root of 31713324 is about 5631.4584256656. The cubic root of 31713324 is about 316.5293030577.

The spelling of 31713324 in words is "thirty-one million, seven hundred thirteen thousand, three hundred twenty-four".