111313431 has 12 divisors (see below), whose sum is σ = 161307120. Its totient is φ = 73968480.

The previous prime is 111313429. The next prime is 111313493. The reversal of 111313431 is 134313111.

It is not a de Polignac number, because 111313431 - 2¹ = 111313429 is a prime.

It is a super-2 number, since 2×111313431² = 24781359841983522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111313421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17086 + ... + 22683.

It is an arithmetic number, because the mean of its divisors is an integer number (13442260).

Almost surely, 2^111313431 is an apocalyptic number.

111313431 is a deficient number, since it is larger than the sum of its proper divisors (49993689).

111313431 is a wasteful number, since it uses less digits than its factorization.

111313431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40086 (or 40083 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 111313431 is about 10550.5180441531. The cubic root of 111313431 is about 481.0414756126.

Adding to 111313431 its reverse (134313111), we get a palindrome (245626542).

The spelling of 111313431 in words is "one hundred eleven million, three hundred thirteen thousand, four hundred thirty-one".