23311216211 has 2 divisors, whose sum is σ = 23311216212. Its totient is φ = 23311216210.

The previous prime is 23311216199. The next prime is 23311216283. The reversal of 23311216211 is 11261211332.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23311216211 is a prime.

It is not a weakly prime, because it can be changed into another prime (23311216111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655608105 + 11655608106.

It is an arithmetic number, because the mean of its divisors is an integer number (11655608106).

Almost surely, 2^23311216211 is an apocalyptic number.

23311216211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311216211 is an equidigital number, since it uses as much as digits as its factorization.

23311216211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

Adding to 23311216211 its reverse (11261211332), we get a palindrome (34572427543).

It can be divided in two parts, 2331121 and 6211, that added together give a palindrome (2337332).

The spelling of 23311216211 in words is "twenty-three billion, three hundred eleven million, two hundred sixteen thousand, two hundred eleven".