111310231231 has 2 divisors, whose sum is σ = 111310231232. Its totient is φ = 111310231230.

The previous prime is 111310231223. The next prime is 111310231261. The reversal of 111310231231 is 132132013111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111310231231 - 2³ = 111310231223 is a prime.

It is a super-2 number, since 2×111310231231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111310231199 and 111310231208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111310231211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55655115615 + 55655115616.

It is an arithmetic number, because the mean of its divisors is an integer number (55655115616).

Almost surely, 2^111310231231 is an apocalyptic number.

111310231231 is a deficient number, since it is larger than the sum of its proper divisors (1).

111310231231 is an equidigital number, since it uses as much as digits as its factorization.

111310231231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111310231231 its reverse (132132013111), we get a palindrome (243442244342).

The spelling of 111310231231 in words is "one hundred eleven billion, three hundred ten million, two hundred thirty-one thousand, two hundred thirty-one".