2256311233209 has 16 divisors (see below), whose sum is σ = 3313770430464. Its totient is φ = 1354185027600.

The previous prime is 2256311233207. The next prime is 2256311233243. The reversal of 2256311233209 is 9023321136522.

It is not a de Polignac number, because 2256311233209 - 2¹ = 2256311233207 is a prime.

It is a super-2 number, since 2×2256311233209² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2256311233207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331904697 + ... + 331911494.

It is an arithmetic number, because the mean of its divisors is an integer number (207110651904).

Almost surely, 2^{2256311233209} is an apocalyptic number.

It is an amenable number.

2256311233209 is a deficient number, since it is larger than the sum of its proper divisors (1057459197255).

2256311233209 is a wasteful number, since it uses less digits than its factorization.

2256311233209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663816308.

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 2256311233209 in words is "two trillion, two hundred fifty-six billion, three hundred eleven million, two hundred thirty-three thousand, two hundred nine".