23011323211 has 2 divisors, whose sum is σ = 23011323212. Its totient is φ = 23011323210.

The previous prime is 23011323191. The next prime is 23011323221. The reversal of 23011323211 is 11232311032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23011323211 is a prime.

It is a super-2 number, since 2×23011323211² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23011323221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11505661605 + 11505661606.

It is an arithmetic number, because the mean of its divisors is an integer number (11505661606).

Almost surely, 2^23011323211 is an apocalyptic number.

23011323211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23011323211 is an equidigital number, since it uses as much as digits as its factorization.

23011323211 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 23011323211 its reverse (11232311032), we get a palindrome (34243634243).

The spelling of 23011323211 in words is "twenty-three billion, eleven million, three hundred twenty-three thousand, two hundred eleven".