111232311231 has 16 divisors (see below), whose sum is σ = 153682673760. Its totient is φ = 71477038080.

The previous prime is 111232311221. The next prime is 111232311247. The reversal of 111232311231 is 132113232111.

It is not a de Polignac number, because 111232311231 - 2¹⁵ = 111232278463 is a prime.

It is a super-2 number, since 2×111232311231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111232311198 and 111232311207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111232311221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026430 + ... + 1129611.

It is an arithmetic number, because the mean of its divisors is an integer number (9605167110).

Almost surely, 2^111232311231 is an apocalyptic number.

111232311231 is a deficient number, since it is larger than the sum of its proper divisors (42450362529).

111232311231 is a wasteful number, since it uses less digits than its factorization.

111232311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156666.

The product of its digits is 216, while the sum is 21.

Adding to 111232311231 its reverse (132113232111), we get a palindrome (243345543342).

The spelling of 111232311231 in words is "one hundred eleven billion, two hundred thirty-two million, three hundred eleven thousand, two hundred thirty-one".