111000423431 has 16 divisors (see below), whose sum is σ = 118856678400. Its totient is φ = 103346595648.

The previous prime is 111000423427. The next prime is 111000423493. The reversal of 111000423431 is 134324000111.

It is a cyclic number.

It is not a de Polignac number, because 111000423431 - 2² = 111000423427 is a prime.

It is a super-2 number, since 2×111000423431² (a number of 23 digits) 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 (111000423631) 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, 4614371 + ... + 4638363.

It is an arithmetic number, because the mean of its divisors is an integer number (7428542400).

Almost surely, 2^111000423431 is an apocalyptic number.

111000423431 is a deficient number, since it is larger than the sum of its proper divisors (7856254969).

111000423431 is a wasteful number, since it uses less digits than its factorization.

111000423431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28198.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 111000423431 its reverse (134324000111), we get a palindrome (245324423542).

The spelling of 111000423431 in words is "one hundred eleven billion, four hundred twenty-three thousand, four hundred thirty-one".