312212164 has 48 divisors (see below), whose sum is σ = 623056896. Its totient is φ = 135626400.

The previous prime is 312212141. The next prime is 312212183. The reversal of 312212164 is 461212213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87169 + ... + 90679.

It is an arithmetic number, because the mean of its divisors is an integer number (12980352).

Almost surely, 2^312212164 is an apocalyptic number.

It is an amenable number.

312212164 is a deficient number, since it is larger than the sum of its proper divisors (310844732).

312212164 is a wasteful number, since it uses less digits than its factorization.

312212164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616 (or 3614 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 312212164 is about 17669.5264226294. The cubic root of 312212164 is about 678.3959915853.

Adding to 312212164 its reverse (461212213), we get a palindrome (773424377).

The spelling of 312212164 in words is "three hundred twelve million, two hundred twelve thousand, one hundred sixty-four".