111404231 has 4 divisors (see below), whose sum is σ = 111454200. Its totient is φ = 111354264.

The previous prime is 111404221. The next prime is 111404291. The reversal of 111404231 is 132404111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111404231 - 2¹⁴ = 111387847 is a prime.

It is a super-2 number, since 2×111404231² = 24821805369402722, 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 (111404221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21476 + ... + 26153.

It is an arithmetic number, because the mean of its divisors is an integer number (27863550).

Almost surely, 2^111404231 is an apocalyptic number.

111404231 is a deficient number, since it is larger than the sum of its proper divisors (49969).

111404231 is an equidigital number, since it uses as much as digits as its factorization.

111404231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49968.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 111404231 is about 10554.8202732211. The cubic root of 111404231 is about 481.1722375957.

Adding to 111404231 its reverse (132404111), we get a palindrome (243808342).

The spelling of 111404231 in words is "one hundred eleven million, four hundred four thousand, two hundred thirty-one".