31152164 has 12 divisors (see below), whose sum is σ = 55676544. Its totient is φ = 15244584.

The previous prime is 31152161. The next prime is 31152217. The reversal of 31152164 is 46125113.

It is not an unprimeable number, because it can be changed into a prime (31152161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82664 + ... + 83039.

It is an arithmetic number, because the mean of its divisors is an integer number (4639712).

Almost surely, 2^31152164 is an apocalyptic number.

It is an amenable number.

31152164 is a deficient number, since it is larger than the sum of its proper divisors (24524380).

31152164 is a wasteful number, since it uses less digits than its factorization.

31152164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165754 (or 165752 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 31152164 is about 5581.4123660593. The cubic root of 31152164 is about 314.6512104788.

Adding to 31152164 its reverse (46125113), we get a palindrome (77277277).

The spelling of 31152164 in words is "thirty-one million, one hundred fifty-two thousand, one hundred sixty-four".