312216604 has 12 divisors (see below), whose sum is σ = 624433264. Its totient is φ = 133807104.

The previous prime is 312216601. The next prime is 312216617. The reversal of 312216604 is 406612213.

312216604 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312216601) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5575269 + ... + 5575324.

Almost surely, 2^312216604 is an apocalyptic number.

It is an amenable number.

312216604 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

312216604 is a wasteful number, since it uses less digits than its factorization.

312216604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11150604 (or 11150602 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 312216604 is about 17669.6520622224. The cubic root of 312216604 is about 678.3992074155.

Adding to 312216604 its reverse (406612213), we get a palindrome (718828817).

The spelling of 312216604 in words is "three hundred twelve million, two hundred sixteen thousand, six hundred four".