312974689 has 8 divisors (see below), whose sum is σ = 321714792. Its totient is φ = 304287360.

The previous prime is 312974681. The next prime is 312974723. The reversal of 312974689 is 986479213.

It can be written as a sum of positive squares in 4 ways, for example, as 92006464 + 220968225 = 9592^2 + 14865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312974689 - 2³ = 312974681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312974681) 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, 1014 + ... + 25039.

It is an arithmetic number, because the mean of its divisors is an integer number (40214349).

Almost surely, 2^312974689 is an apocalyptic number.

It is an amenable number.

312974689 is a deficient number, since it is larger than the sum of its proper divisors (8740103).

312974689 is a wasteful number, since it uses less digits than its factorization.

312974689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26387.

The product of its digits is 653184, while the sum is 49.

The square root of 312974689 is about 17691.0906673387. The cubic root of 312974689 is about 678.9478314339.

The spelling of 312974689 in words is "three hundred twelve million, nine hundred seventy-four thousand, six hundred eighty-nine".