31229164 has 6 divisors (see below), whose sum is σ = 54651044. Its totient is φ = 15614580.

The previous prime is 31229129. The next prime is 31229189. The reversal of 31229164 is 46192213.

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 as a sum of consecutive naturals, namely, 3903642 + ... + 3903649.

Almost surely, 2^31229164 is an apocalyptic number.

It is an amenable number.

31229164 is a deficient number, since it is larger than the sum of its proper divisors (23421880).

31229164 is a wasteful number, since it uses less digits than its factorization.

31229164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7807295 (or 7807293 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 31229164 is about 5588.3060045062. The cubic root of 31229164 is about 314.9102423361.

The spelling of 31229164 in words is "thirty-one million, two hundred twenty-nine thousand, one hundred sixty-four".