111004431 has 12 divisors (see below), whose sum is σ = 153289032. Its totient is φ = 71449504.

The previous prime is 111004423. The next prime is 111004433. The reversal of 111004431 is 134400111.

It is not a de Polignac number, because 111004431 - 2³ = 111004423 is a prime.

It is a super-2 number, since 2×111004431² = 24643967403267522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111004431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111004433) 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, 19476 + ... + 24521.

It is an arithmetic number, because the mean of its divisors is an integer number (12774086).

Almost surely, 2^111004431 is an apocalyptic number.

111004431 is a deficient number, since it is larger than the sum of its proper divisors (42284601).

111004431 is an equidigital number, since it uses as much as digits as its factorization.

111004431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44058 (or 44029 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 111004431 is about 10535.8640367081. The cubic root of 111004431 is about 480.5959481572.

Adding to 111004431 its reverse (134400111), we get a palindrome (245404542).

The spelling of 111004431 in words is "one hundred eleven million, four thousand, four hundred thirty-one".