23031211211 has 2 divisors, whose sum is σ = 23031211212. Its totient is φ = 23031211210.

The previous prime is 23031211183. The next prime is 23031211243. The reversal of 23031211211 is 11211213032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23031211211 - 2¹⁴ = 23031194827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23031211211.

It is not a weakly prime, because it can be changed into another prime (23031211111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515605605 + 11515605606.

It is an arithmetic number, because the mean of its divisors is an integer number (11515605606).

Almost surely, 2^23031211211 is an apocalyptic number.

23031211211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23031211211 is an equidigital number, since it uses as much as digits as its factorization.

23031211211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 23031211211 its reverse (11211213032), we get a palindrome (34242424243).

The spelling of 23031211211 in words is "twenty-three billion, thirty-one million, two hundred eleven thousand, two hundred eleven".