312679280 has 20 divisors (see below), whose sum is σ = 726979512. Its totient is φ = 125071680.

The previous prime is 312679261. The next prime is 312679313. The reversal of 312679280 is 82976213.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954166 + ... + 1954325.

Almost surely, 2^312679280 is an apocalyptic number.

It is an amenable number.

312679280 is an abundant number, since it is smaller than the sum of its proper divisors (414300232).

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

312679280 is a wasteful number, since it uses less digits than its factorization.

312679280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908504 (or 3908498 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 312679280 is about 17682.7396067465. The cubic root of 312679280 is about 678.7341502177.

The spelling of 312679280 in words is "three hundred twelve million, six hundred seventy-nine thousand, two hundred eighty".