31162113 has 12 divisors (see below), whose sum is σ = 45646848. Its totient is φ = 20481720.

The previous prime is 31162093. The next prime is 31162129. The reversal of 31162113 is 31126113.

31162113 is a `hidden beast` number, since 31 + 1 + 621 + 13 = 666.

It is not a de Polignac number, because 31162113 - 2⁶ = 31162049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31162213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23745 + ... + 25022.

It is an arithmetic number, because the mean of its divisors is an integer number (3803904).

Almost surely, 2^31162113 is an apocalyptic number.

It is an amenable number.

31162113 is a deficient number, since it is larger than the sum of its proper divisors (14484735).

31162113 is a wasteful number, since it uses less digits than its factorization.

31162113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48844 (or 48841 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 31162113 is about 5582.3035567765. The cubic root of 31162113 is about 314.6847034083.

Adding to 31162113 its reverse (31126113), we get a palindrome (62288226).

The spelling of 31162113 in words is "thirty-one million, one hundred sixty-two thousand, one hundred thirteen".