111132113231 has 2 divisors, whose sum is σ = 111132113232. Its totient is φ = 111132113230.

The previous prime is 111132113221. The next prime is 111132113321. The reversal of 111132113231 is 132311231111.

Together with next prime (111132113321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111132113231 is a prime.

It is a super-2 number, since 2×111132113231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111132113221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55566056615 + 55566056616.

It is an arithmetic number, because the mean of its divisors is an integer number (55566056616).

Almost surely, 2^111132113231 is an apocalyptic number.

111132113231 is a deficient number, since it is larger than the sum of its proper divisors (1).

111132113231 is an equidigital number, since it uses as much as digits as its factorization.

111132113231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 20.

Adding to 111132113231 its reverse (132311231111), we get a palindrome (243443344342).

The spelling of 111132113231 in words is "one hundred eleven billion, one hundred thirty-two million, one hundred thirteen thousand, two hundred thirty-one".