2256313063213 has 4 divisors (see below), whose sum is σ = 2461432432608. Its totient is φ = 2051193693820.

The previous prime is 2256313063189. The next prime is 2256313063247. The reversal of 2256313063213 is 3123603136522.

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 a de Polignac number, because none of the positive numbers 2^k-2256313063213 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 (2256313063813) 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, 102559684681 + ... + 102559684702.

It is an arithmetic number, because the mean of its divisors is an integer number (615358108152).

Almost surely, 2^{2256313063213} is an apocalyptic number.

It is an amenable number.

2256313063213 is a deficient number, since it is larger than the sum of its proper divisors (205119369395).

2256313063213 is a wasteful number, since it uses less digits than its factorization.

2256313063213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205119369394.

The product of its (nonzero) digits is 116640, while the sum is 37.

Adding to 2256313063213 its reverse (3123603136522), we get a palindrome (5379916199735).

The spelling of 2256313063213 in words is "two trillion, two hundred fifty-six billion, three hundred thirteen million, sixty-three thousand, two hundred thirteen".