256201313 has 4 divisors (see below), whose sum is σ = 256254768. Its totient is φ = 256147860.

The previous prime is 256201303. The next prime is 256201327. The reversal of 256201313 is 313102652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256201313 - 2¹² = 256197217 is a prime.

It is a super-2 number, since 2×256201313² = 131278225565847938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256201303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18743 + ... + 29388.

It is an arithmetic number, because the mean of its divisors is an integer number (64063692).

Almost surely, 2^256201313 is an apocalyptic number.

It is an amenable number.

256201313 is a deficient number, since it is larger than the sum of its proper divisors (53455).

256201313 is an equidigital number, since it uses as much as digits as its factorization.

256201313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53454.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 256201313 is about 16006.2897949525. The cubic root of 256201313 is about 635.1268170051.

Adding to 256201313 its reverse (313102652), we get a palindrome (569303965).

The spelling of 256201313 in words is "two hundred fifty-six million, two hundred one thousand, three hundred thirteen".