2311204071331 has 2 divisors, whose sum is σ = 2311204071332. Its totient is φ = 2311204071330.

The previous prime is 2311204071329. The next prime is 2311204071353. The reversal of 2311204071331 is 1331704021132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2311204071331 - 2¹ = 2311204071329 is a prime.

It is a super-2 number, since 2×2311204071331² (a number of 26 digits) contains 22 as substring.

Together with 2311204071329, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2311204071331.

It is not a weakly prime, because it can be changed into another prime (2311204078331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155602035665 + 1155602035666.

It is an arithmetic number, because the mean of its divisors is an integer number (1155602035666).

Almost surely, 2^{2311204071331} is an apocalyptic number.

2311204071331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311204071331 is an equidigital number, since it uses as much as digits as its factorization.

2311204071331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 2311204071331 its reverse (1331704021132), we get a palindrome (3642908092463).

The spelling of 2311204071331 in words is "two trillion, three hundred eleven billion, two hundred four million, seventy-one thousand, three hundred thirty-one".