312568513 has 2 divisors, whose sum is σ = 312568514. Its totient is φ = 312568512.

The previous prime is 312568499. The next prime is 312568517. The reversal of 312568513 is 315865213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159971904 + 152596609 = 12648^2 + 12353^2 .

It is a cyclic number.

It is not a de Polignac number, because 312568513 - 2⁵ = 312568481 is a prime.

It is not a weakly prime, because it can be changed into another prime (312568517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156284256 + 156284257.

It is an arithmetic number, because the mean of its divisors is an integer number (156284257).

Almost surely, 2^312568513 is an apocalyptic number.

It is an amenable number.

312568513 is a deficient number, since it is larger than the sum of its proper divisors (1).

312568513 is an equidigital number, since it uses as much as digits as its factorization.

312568513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The square root of 312568513 is about 17679.6072637375. The cubic root of 312568513 is about 678.6539932967.

The spelling of 312568513 in words is "three hundred twelve million, five hundred sixty-eight thousand, five hundred thirteen".