231423111 has 12 divisors (see below), whose sum is σ = 334872720. Its totient is φ = 154007520.

The previous prime is 231423107. The next prime is 231423139. The reversal of 231423111 is 111324132.

231423111 is a `hidden beast` number, since 231 + 423 + 1 + 11 = 666.

It is not a de Polignac number, because 231423111 - 2² = 231423107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231423191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17475 + ... + 27716.

It is an arithmetic number, because the mean of its divisors is an integer number (27906060).

Almost surely, 2^231423111 is an apocalyptic number.

231423111 is a deficient number, since it is larger than the sum of its proper divisors (103449609).

231423111 is a wasteful number, since it uses less digits than its factorization.

231423111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45766 (or 45763 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 231423111 is about 15212.5971155487. The cubic root of 231423111 is about 613.9536361487.

Adding to 231423111 its reverse (111324132), we get a palindrome (342747243).

It can be divided in two parts, 2314 and 23111, that added together give a triangular number (25425 = T₂₂₅).

The spelling of 231423111 in words is "two hundred thirty-one million, four hundred twenty-three thousand, one hundred eleven".