256303867 has 2 divisors, whose sum is σ = 256303868. Its totient is φ = 256303866.

The previous prime is 256303843. The next prime is 256303871. The reversal of 256303867 is 768303652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256303867 - 2¹¹ = 256301819 is a prime.

It is not a weakly prime, because it can be changed into another prime (256303837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128151933 + 128151934.

It is an arithmetic number, because the mean of its divisors is an integer number (128151934).

Almost surely, 2^256303867 is an apocalyptic number.

256303867 is a deficient number, since it is larger than the sum of its proper divisors (1).

256303867 is an equidigital number, since it uses as much as digits as its factorization.

256303867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 256303867 is about 16009.4930275759. The cubic root of 256303867 is about 635.2115499910.

The spelling of 256303867 in words is "two hundred fifty-six million, three hundred three thousand, eight hundred sixty-seven".