111323431 has 8 divisors (see below), whose sum is σ = 117841680. Its totient is φ = 104983872.

The previous prime is 111323423. The next prime is 111323437. The reversal of 111323431 is 134323111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111323431 - 2³ = 111323423 is a prime.

It is a super-2 number, since 2×111323431² = 24785812579223522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111323399 and 111323408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111323437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43390 + ... + 45883.

It is an arithmetic number, because the mean of its divisors is an integer number (14730210).

Almost surely, 2^111323431 is an apocalyptic number.

111323431 is a deficient number, since it is larger than the sum of its proper divisors (6518249).

111323431 is an equidigital number, since it uses as much as digits as its factorization.

111323431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89345.

The product of its digits is 216, while the sum is 19.

The square root of 111323431 is about 10550.9919438885. The cubic root of 111323431 is about 481.0558801958.

Adding to 111323431 its reverse (134323111), we get a palindrome (245646542).

The spelling of 111323431 in words is "one hundred eleven million, three hundred twenty-three thousand, four hundred thirty-one".