31312634 has 16 divisors (see below), whose sum is σ = 48789000. Its totient is φ = 15054144.

The previous prime is 31312613. The next prime is 31312679. The reversal of 31312634 is 43621313.

It can be written as a sum of positive squares in 4 ways, for example, as 26677225 + 4635409 = 5165^2 + 2153^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15092 + ... + 17040.

Almost surely, 2^31312634 is an apocalyptic number.

31312634 is a deficient number, since it is larger than the sum of its proper divisors (17476366).

31312634 is a wasteful number, since it uses less digits than its factorization.

31312634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257.

The product of its digits is 1296, while the sum is 23.

The square root of 31312634 is about 5595.7692947440. The cubic root of 31312634 is about 315.1905590913.

Adding to 31312634 its reverse (43621313), we get a palindrome (74933947).

The spelling of 31312634 in words is "thirty-one million, three hundred twelve thousand, six hundred thirty-four".