312723856 has 15 divisors (see below), whose sum is σ = 606039553. Its totient is φ = 156326560.

The previous prime is 312723841. The next prime is 312723899. The reversal of 312723856 is 658327213.

The square root of 312723856 is 17684.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 259725456 + 52998400 = 16116^2 + 7280^2 .

It is a super-2 number, since 2×312723856² = 195592420223017472, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 68526 + ... + 72946.

Almost surely, 2^312723856 is an apocalyptic number.

312723856 is the 17684-th square number.

It is an amenable number.

312723856 is a deficient number, since it is larger than the sum of its proper divisors (293315697).

312723856 is an frugal number, since it uses more digits than its factorization.

312723856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8850 (or 4423 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The cubic root of 312723856 is about 678.7664024516.

The spelling of 312723856 in words is "three hundred twelve million, seven hundred twenty-three thousand, eight hundred fifty-six".