23311611331 has 2 divisors, whose sum is σ = 23311611332. Its totient is φ = 23311611330.

The previous prime is 23311611317. The next prime is 23311611413. The reversal of 23311611331 is 13311611332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23311611331 - 2¹¹ = 23311609283 is a prime.

It is a super-2 number, since 2×23311611331² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23311611296 and 23311611305.

It is not a weakly prime, because it can be changed into another prime (23311611931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655805665 + 11655805666.

It is an arithmetic number, because the mean of its divisors is an integer number (11655805666).

Almost surely, 2^23311611331 is an apocalyptic number.

23311611331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311611331 is an equidigital number, since it uses as much as digits as its factorization.

23311611331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 25.

Subtracting from 23311611331 its reverse (13311611332), we obtain a palindrome (9999999999).

The spelling of 23311611331 in words is "twenty-three billion, three hundred eleven million, six hundred eleven thousand, three hundred thirty-one".