312938916 has 24 divisors (see below), whose sum is σ = 730707264. Its totient is φ = 104239200.

The previous prime is 312938903. The next prime is 312938917. The reversal of 312938916 is 619839213.

It is not an unprimeable number, because it can be changed into a prime (312938917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10066 + ... + 26966.

It is an arithmetic number, because the mean of its divisors is an integer number (30446136).

Almost surely, 2^312938916 is an apocalyptic number.

It is an amenable number.

312938916 is an abundant number, since it is smaller than the sum of its proper divisors (417768348).

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

312938916 is a wasteful number, since it uses less digits than its factorization.

312938916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18451 (or 18449 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 312938916 is about 17690.0795928113. The cubic root of 312938916 is about 678.9219625409.

The spelling of 312938916 in words is "three hundred twelve million, nine hundred thirty-eight thousand, nine hundred sixteen".