256363423 has 2 divisors, whose sum is σ = 256363424. Its totient is φ = 256363422.

The previous prime is 256363403. The next prime is 256363433. The reversal of 256363423 is 324363652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256363423 - 2⁵ = 256363391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256363403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128181711 + 128181712.

It is an arithmetic number, because the mean of its divisors is an integer number (128181712).

Almost surely, 2^256363423 is an apocalyptic number.

256363423 is a deficient number, since it is larger than the sum of its proper divisors (1).

256363423 is an equidigital number, since it uses as much as digits as its factorization.

256363423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 34.

The square root of 256363423 is about 16011.3529409604. The cubic root of 256363423 is about 635.2607464515.

The spelling of 256363423 in words is "two hundred fifty-six million, three hundred sixty-three thousand, four hundred twenty-three".