312314257 has 4 divisors (see below), whose sum is σ = 312998116. Its totient is φ = 311630400.

The previous prime is 312314239. The next prime is 312314287. The reversal of 312314257 is 752413213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 229704336 + 82609921 = 15156^2 + 9089^2 .

It is a cyclic number.

It is not a de Polignac number, because 312314257 - 2²³ = 303925649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312314207) by changing a digit.

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, 341244 + ... + 342157.

It is an arithmetic number, because the mean of its divisors is an integer number (78249529).

Almost surely, 2^312314257 is an apocalyptic number.

It is an amenable number.

312314257 is a deficient number, since it is larger than the sum of its proper divisors (683859).

312314257 is an equidigital number, since it uses as much as digits as its factorization.

312314257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683858.

The product of its digits is 5040, while the sum is 28.

The square root of 312314257 is about 17672.4151433809. The cubic root of 312314257 is about 678.4699284164.

The spelling of 312314257 in words is "three hundred twelve million, three hundred fourteen thousand, two hundred fifty-seven".