111433434231 has 64 divisors (see below), whose sum is σ = 177099955200. Its totient is φ = 62275973760.

The previous prime is 111433434221. The next prime is 111433434257. The reversal of 111433434231 is 132434334111.

It is not a de Polignac number, because 111433434231 - 2⁹ = 111433433719 is a prime.

It is a super-2 number, since 2×111433434231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111433434221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18048661 + ... + 18054833.

It is an arithmetic number, because the mean of its divisors is an integer number (2767186800).

Almost surely, 2^111433434231 is an apocalyptic number.

111433434231 is a deficient number, since it is larger than the sum of its proper divisors (65666520969).

111433434231 is an equidigital number, since it uses as much as digits as its factorization.

111433434231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581 (or 6567 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

Adding to 111433434231 its reverse (132434334111), we get a palindrome (243867768342).

The spelling of 111433434231 in words is "one hundred eleven billion, four hundred thirty-three million, four hundred thirty-four thousand, two hundred thirty-one".