11123323231 has 2 divisors, whose sum is σ = 11123323232. Its totient is φ = 11123323230.

The previous prime is 11123323177. The next prime is 11123323241. The reversal of 11123323231 is 13232332111.

It is a strong prime.

It is an emirp because it is prime and its reverse (13232332111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11123323231 - 2⁹ = 11123322719 is a prime.

It is a super-2 number, since 2×11123323231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123323241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561661615 + 5561661616.

It is an arithmetic number, because the mean of its divisors is an integer number (5561661616).

Almost surely, 2^11123323231 is an apocalyptic number.

11123323231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123323231 is an equidigital number, since it uses as much as digits as its factorization.

11123323231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

Adding to 11123323231 its reverse (13232332111), we get a palindrome (24355655342).

The spelling of 11123323231 in words is "eleven billion, one hundred twenty-three million, three hundred twenty-three thousand, two hundred thirty-one".