312891316 has 12 divisors (see below), whose sum is σ = 576378880. Its totient is φ = 148211640.

The previous prime is 312891311. The next prime is 312891317. The reversal of 312891316 is 613198213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312891311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2058420 + ... + 2058571.

Almost surely, 2^312891316 is an apocalyptic number.

It is an amenable number.

312891316 is a deficient number, since it is larger than the sum of its proper divisors (263487564).

312891316 is a wasteful number, since it uses less digits than its factorization.

312891316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117014 (or 4117012 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 312891316 is about 17688.7341548230. The cubic root of 312891316 is about 678.8875380122.

The spelling of 312891316 in words is "three hundred twelve million, eight hundred ninety-one thousand, three hundred sixteen".