256307 has 2 divisors, whose sum is σ = 256308. Its totient is φ = 256306.

The previous prime is 256301. The next prime is 256313. The reversal of 256307 is 703652.

It is a balanced prime because it is at equal distance from previous prime (256301) and next prime (256313).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256307 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256307.

It is not a weakly prime, because it can be changed into another prime (256301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128153 + 128154.

It is an arithmetic number, because the mean of its divisors is an integer number (128154).

2²⁵⁶³⁰⁷ is an apocalyptic number.

256307 is a deficient number, since it is larger than the sum of its proper divisors (1).

256307 is an equidigital number, since it uses as much as digits as its factorization.

256307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 256307 is about 506.2677157394. The cubic root of 256307 is about 63.5214138207.

Adding to 256307 its reverse (703652), we get a palindrome (959959).

The spelling of 256307 in words is "two hundred fifty-six thousand, three hundred seven".