312243957 has 24 divisors (see below), whose sum is σ = 479119680. Its totient is φ = 200970000.

The previous prime is 312243917. The next prime is 312243977. The reversal of 312243957 is 759342213.

It is not a de Polignac number, because 312243957 - 2¹⁶ = 312178421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312243917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15832 + ... + 29582.

It is an arithmetic number, because the mean of its divisors is an integer number (19963320).

Almost surely, 2^312243957 is an apocalyptic number.

It is an amenable number.

312243957 is a deficient number, since it is larger than the sum of its proper divisors (166875723).

312243957 is a wasteful number, since it uses less digits than its factorization.

312243957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13818 (or 13783 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 312243957 is about 17670.4260559840. The cubic root of 312243957 is about 678.4190181403.

The spelling of 312243957 in words is "three hundred twelve million, two hundred forty-three thousand, nine hundred fifty-seven".