256343063 has 4 divisors (see below), whose sum is σ = 257218248. Its totient is φ = 255467880.

The previous prime is 256343057. The next prime is 256343069. The reversal of 256343063 is 360343652.

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

It is an interprime number because it is at equal distance from previous prime (256343057) and next prime (256343069).

It is a cyclic number.

It is not a de Polignac number, because 256343063 - 2⁴ = 256343047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256343069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437153 + ... + 437738.

It is an arithmetic number, because the mean of its divisors is an integer number (64304562).

Almost surely, 2^256343063 is an apocalyptic number.

256343063 is a deficient number, since it is larger than the sum of its proper divisors (875185).

256343063 is an equidigital number, since it uses as much as digits as its factorization.

256343063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875184.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 256343063 is about 16010.7171294730. The cubic root of 256343063 is about 635.2439288532.

The spelling of 256343063 in words is "two hundred fifty-six million, three hundred forty-three thousand, sixty-three".