2311122641 has 2 divisors, whose sum is σ = 2311122642. Its totient is φ = 2311122640.

The previous prime is 2311122637. The next prime is 2311122673. The reversal of 2311122641 is 1462211132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2011971025 + 299151616 = 44855^2 + 17296^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311122641 - 2² = 2311122637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2311122241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155561320 + 1155561321.

It is an arithmetic number, because the mean of its divisors is an integer number (1155561321).

Almost surely, 2^2311122641 is an apocalyptic number.

It is an amenable number.

2311122641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311122641 is an equidigital number, since it uses as much as digits as its factorization.

2311122641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 2311122641 is about 48074.1369241300. The cubic root of 2311122641 is about 1322.1305204363.

Adding to 2311122641 its reverse (1462211132), we get a palindrome (3773333773).

The spelling of 2311122641 in words is "two billion, three hundred eleven million, one hundred twenty-two thousand, six hundred forty-one".