312707872 has 12 divisors (see below), whose sum is σ = 615643686. Its totient is φ = 156353920.

The previous prime is 312707869. The next prime is 312707891. The reversal of 312707872 is 278707213.

It can be written as a sum of positive squares in only one way, i.e., 275692816 + 37015056 = 16604^2 + 6084^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4886029 + ... + 4886092.

Almost surely, 2^312707872 is an apocalyptic number.

312707872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

312707872 is a deficient number, since it is larger than the sum of its proper divisors (302935814).

312707872 is an equidigital number, since it uses as much as digits as its factorization.

312707872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9772131 (or 9772123 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 312707872 is about 17683.5480602734. The cubic root of 312707872 is about 678.7548378430.

The spelling of 312707872 in words is "three hundred twelve million, seven hundred seven thousand, eight hundred seventy-two".