23311320211 has 2 divisors, whose sum is σ = 23311320212. Its totient is φ = 23311320210.

The previous prime is 23311320187. The next prime is 23311320223. The reversal of 23311320211 is 11202311332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23311320211 - 2⁷ = 23311320083 is a prime.

It is not a weakly prime, because it can be changed into another prime (23311320811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655660105 + 11655660106.

It is an arithmetic number, because the mean of its divisors is an integer number (11655660106).

Almost surely, 2^23311320211 is an apocalyptic number.

23311320211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311320211 is an equidigital number, since it uses as much as digits as its factorization.

23311320211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23311320211 its reverse (11202311332), we get a palindrome (34513631543).

The spelling of 23311320211 in words is "twenty-three billion, three hundred eleven million, three hundred twenty thousand, two hundred eleven".