2311123231133 has 2 divisors, whose sum is σ = 2311123231134. Its totient is φ = 2311123231132.

The previous prime is 2311123231111. The next prime is 2311123231163. The reversal of 2311123231133 is 3311323211132.

2311123231133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1477009994329 + 834113236804 = 1215323^2 + 913298^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311123231133 - 2¹⁸ = 2311122968989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311123231163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155561615566 + 1155561615567.

It is an arithmetic number, because the mean of its divisors is an integer number (1155561615567).

Almost surely, 2^{2311123231133} is an apocalyptic number.

It is an amenable number.

2311123231133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311123231133 is an equidigital number, since it uses as much as digits as its factorization.

2311123231133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

Adding to 2311123231133 its reverse (3311323211132), we get a palindrome (5622446442265).

The spelling of 2311123231133 in words is "two trillion, three hundred eleven billion, one hundred twenty-three million, two hundred thirty-one thousand, one hundred thirty-three".