312315678 has 12 divisors (see below), whose sum is σ = 676684008. Its totient is φ = 104105220.

The previous prime is 312315649. The next prime is 312315683. The reversal of 312315678 is 876513213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8675418 + ... + 8675453.

It is an arithmetic number, because the mean of its divisors is an integer number (56390334).

Almost surely, 2^312315678 is an apocalyptic number.

312315678 is an abundant number, since it is smaller than the sum of its proper divisors (364368330).

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

312315678 is a wasteful number, since it uses less digits than its factorization.

312315678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17350879 (or 17350876 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 312315678 is about 17672.4553472346. The cubic root of 312315678 is about 678.4709574059.

The spelling of 312315678 in words is "three hundred twelve million, three hundred fifteen thousand, six hundred seventy-eight".