23131444211 has 2 divisors, whose sum is σ = 23131444212. Its totient is φ = 23131444210.

The previous prime is 23131444207. The next prime is 23131444223. The reversal of 23131444211 is 11244413132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23131444211 - 2² = 23131444207 is a prime.

It is a super-2 number, since 2×23131444211² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23131444201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565722105 + 11565722106.

It is an arithmetic number, because the mean of its divisors is an integer number (11565722106).

Almost surely, 2^23131444211 is an apocalyptic number.

23131444211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131444211 is an equidigital number, since it uses as much as digits as its factorization.

23131444211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

Adding to 23131444211 its reverse (11244413132), we get a palindrome (34375857343).

The spelling of 23131444211 in words is "twenty-three billion, one hundred thirty-one million, four hundred forty-four thousand, two hundred eleven".