31105164 has 48 divisors (see below), whose sum is σ = 74866176. Its totient is φ = 10046400.

The previous prime is 31105157. The next prime is 31105201. The reversal of 31105164 is 46150113.

It is a self number, because there is not a number n which added to its sum of digits gives 31105164.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73674 + ... + 74094.

It is an arithmetic number, because the mean of its divisors is an integer number (1559712).

Almost surely, 2^31105164 is an apocalyptic number.

It is an amenable number.

31105164 is an abundant number, since it is smaller than the sum of its proper divisors (43761012).

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

31105164 is a wasteful number, since it uses less digits than its factorization.

31105164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 31105164 is about 5577.2003729470. The cubic root of 31105164 is about 314.4928902795.

Adding to 31105164 its reverse (46150113), we get a palindrome (77255277).

The spelling of 31105164 in words is "thirty-one million, one hundred five thousand, one hundred sixty-four".