111112231 has 8 divisors (see below), whose sum is σ = 112969728. Its totient is φ = 109263000.

The previous prime is 111112219. The next prime is 111112237. The reversal of 111112231 is 132211111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111112231 is a prime.

It is a super-2 number, since 2×111112231² = 24691855755594722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28786 + ... + 32416.

It is an arithmetic number, because the mean of its divisors is an integer number (14121216).

Almost surely, 2^111112231 is an apocalyptic number.

111112231 is a deficient number, since it is larger than the sum of its proper divisors (1857497).

111112231 is an equidigital number, since it uses as much as digits as its factorization.

111112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133.

The product of its digits is 12, while the sum is 13.

The square root of 111112231 is about 10540.9786547550. The cubic root of 111112231 is about 480.7514719230.

Adding to 111112231 its reverse (132211111), we get a palindrome (243323342).

The spelling of 111112231 in words is "one hundred eleven million, one hundred twelve thousand, two hundred thirty-one".