111442031 has 2 divisors, whose sum is σ = 111442032. Its totient is φ = 111442030.

The previous prime is 111442007. The next prime is 111442057. The reversal of 111442031 is 130244111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (130244111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111442031 - 2¹⁰ = 111441007 is a prime.

It is a super-2 number, since 2×111442031² = 24838652546809922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111442081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55721015 + 55721016.

It is an arithmetic number, because the mean of its divisors is an integer number (55721016).

Almost surely, 2^111442031 is an apocalyptic number.

111442031 is a deficient number, since it is larger than the sum of its proper divisors (1).

111442031 is an equidigital number, since it uses as much as digits as its factorization.

111442031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 111442031 is about 10556.6107724023. The cubic root of 111442031 is about 481.2266528056.

Adding to 111442031 its reverse (130244111), we get a palindrome (241686142).

The spelling of 111442031 in words is "one hundred eleven million, four hundred forty-two thousand, thirty-one".