256341307 has 4 divisors (see below), whose sum is σ = 262593576. Its totient is φ = 250089040.

The previous prime is 256341287. The next prime is 256341329. The reversal of 256341307 is 703143652.

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

It is a cyclic number.

It is not a de Polignac number, because 256341307 - 2²³ = 247952699 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256341347) 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, 3126073 + ... + 3126154.

It is an arithmetic number, because the mean of its divisors is an integer number (65648394).

Almost surely, 2^256341307 is an apocalyptic number.

256341307 is a deficient number, since it is larger than the sum of its proper divisors (6252269).

256341307 is an equidigital number, since it uses as much as digits as its factorization.

256341307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252268.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 256341307 is about 16010.6622911109. The cubic root of 256341307 is about 635.2424783350.

Adding to 256341307 its reverse (703143652), we get a palindrome (959484959).

The spelling of 256341307 in words is "two hundred fifty-six million, three hundred forty-one thousand, three hundred seven".