2311221333231 has 12 divisors (see below), whose sum is σ = 3350311355040. Its totient is φ = 1535330895840.

The previous prime is 2311221333203. The next prime is 2311221333251. The reversal of 2311221333231 is 1323331221132.

2311221333231 is a `hidden beast` number, since 2 + 3 + 112 + 213 + 332 + 3 + 1 = 666.

It is not a de Polignac number, because 2311221333231 - 2¹⁴ = 2311221316847 is a prime.

It is a super-2 number, since 2×2311221333231² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2311221333195 and 2311221333204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311221333251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 456941191 + ... + 456946248.

It is an arithmetic number, because the mean of its divisors is an integer number (279192612920).

Almost surely, 2^{2311221333231} is an apocalyptic number.

2311221333231 is a deficient number, since it is larger than the sum of its proper divisors (1039090021809).

2311221333231 is a wasteful number, since it uses less digits than its factorization.

2311221333231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913887726 (or 913887723 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 2311221333231 its reverse (1323331221132), we get a palindrome (3634552554363).

The spelling of 2311221333231 in words is "two trillion, three hundred eleven billion, two hundred twenty-one million, three hundred thirty-three thousand, two hundred thirty-one".