111241431 has 20 divisors (see below), whose sum is σ = 189915792. Its totient is φ = 63566208.

The previous prime is 111241399. The next prime is 111241483. The reversal of 111241431 is 134142111.

It is not a de Polignac number, because 111241431 - 2⁵ = 111241399 is a prime.

It is a super-2 number, since 2×111241431² = 24749311941855522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111241231) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 97530 + ... + 98663.

Almost surely, 2^111241431 is an apocalyptic number.

111241431 is a deficient number, since it is larger than the sum of its proper divisors (78674361).

111241431 is an equidigital number, since it uses as much as digits as its factorization.

111241431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196212 (or 196203 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 111241431 is about 10547.1053374848. The cubic root of 111241431 is about 480.9377371384.

Adding to 111241431 its reverse (134142111), we get a palindrome (245383542).

The spelling of 111241431 in words is "one hundred eleven million, two hundred forty-one thousand, four hundred thirty-one".