256314239 has 4 divisors (see below), whose sum is σ = 257260320. Its totient is φ = 255368160.

The previous prime is 256314221. The next prime is 256314241. The reversal of 256314239 is 932413652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256314239 is a prime.

It is a super-2 number, since 2×256314239² = 131393978228298242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256314199 and 256314208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256314269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472634 + ... + 473175.

It is an arithmetic number, because the mean of its divisors is an integer number (64315080).

Almost surely, 2^256314239 is an apocalyptic number.

256314239 is a deficient number, since it is larger than the sum of its proper divisors (946081).

256314239 is an equidigital number, since it uses as much as digits as its factorization.

256314239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946080.

The product of its digits is 38880, while the sum is 35.

The square root of 256314239 is about 16009.8169571048. The cubic root of 256314239 is about 635.2201183691.

The spelling of 256314239 in words is "two hundred fifty-six million, three hundred fourteen thousand, two hundred thirty-nine".