256311301 has 4 divisors (see below), whose sum is σ = 257120172. Its totient is φ = 255502432.

The previous prime is 256311271. The next prime is 256311323. The reversal of 256311301 is 103113652.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26061025 + 230250276 = 5105^2 + 15174^2 .

It is a cyclic number.

It is not a de Polignac number, because 256311301 - 2⁵ = 256311269 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 (256311361) 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, 403960 + ... + 404593.

It is an arithmetic number, because the mean of its divisors is an integer number (64280043).

Almost surely, 2^256311301 is an apocalyptic number.

It is an amenable number.

256311301 is a deficient number, since it is larger than the sum of its proper divisors (808871).

256311301 is an equidigital number, since it uses as much as digits as its factorization.

256311301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808870.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 256311301 is about 16009.7252006398. The cubic root of 256311301 is about 635.2176912912.

Adding to 256311301 its reverse (103113652), we get a palindrome (359424953).

The spelling of 256311301 in words is "two hundred fifty-six million, three hundred eleven thousand, three hundred one".