113113223231 has 2 divisors, whose sum is σ = 113113223232. Its totient is φ = 113113223230.

The previous prime is 113113223177. The next prime is 113113223233. The reversal of 113113223231 is 132322311311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113113223231 is a prime.

It is a super-2 number, since 2×113113223231² (a number of 23 digits) contains 22 as substring.

Together with 113113223233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 113113223197 and 113113223206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113113223233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56556611615 + 56556611616.

It is an arithmetic number, because the mean of its divisors is an integer number (56556611616).

Almost surely, 2^113113223231 is an apocalyptic number.

113113223231 is a deficient number, since it is larger than the sum of its proper divisors (1).

113113223231 is an equidigital number, since it uses as much as digits as its factorization.

113113223231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

Adding to 113113223231 its reverse (132322311311), we get a palindrome (245435534542).

The spelling of 113113223231 in words is "one hundred thirteen billion, one hundred thirteen million, two hundred twenty-three thousand, two hundred thirty-one".