256317683 has 2 divisors, whose sum is σ = 256317684. Its totient is φ = 256317682.

The previous prime is 256317667. The next prime is 256317707. The reversal of 256317683 is 386713652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256317683 - 2⁴ = 256317667 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256317683.

It is not a weakly prime, because it can be changed into another prime (256314683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128158841 + 128158842.

It is an arithmetic number, because the mean of its divisors is an integer number (128158842).

Almost surely, 2^256317683 is an apocalyptic number.

256317683 is a deficient number, since it is larger than the sum of its proper divisors (1).

256317683 is an equidigital number, since it uses as much as digits as its factorization.

256317683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 256317683 is about 16009.9245157496. The cubic root of 256317683 is about 635.2229634292. Note that the first 3 decimals are identical.

The spelling of 256317683 in words is "two hundred fifty-six million, three hundred seventeen thousand, six hundred eighty-three".