256296307 has 2 divisors, whose sum is σ = 256296308. Its totient is φ = 256296306.

The previous prime is 256296283. The next prime is 256296367. The reversal of 256296307 is 703692652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256296307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256296307.

It is not a weakly prime, because it can be changed into another prime (256296367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128148153 + 128148154.

It is an arithmetic number, because the mean of its divisors is an integer number (128148154).

Almost surely, 2^256296307 is an apocalyptic number.

256296307 is a deficient number, since it is larger than the sum of its proper divisors (1).

256296307 is an equidigital number, since it uses as much as digits as its factorization.

256296307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 256296307 is about 16009.2569159221. The cubic root of 256296307 is about 635.2053044791.

The spelling of 256296307 in words is "two hundred fifty-six million, two hundred ninety-six thousand, three hundred seven".