111023 has 4 divisors (see below), whose sum is σ = 121128. Its totient is φ = 100920.

The previous prime is 110989. The next prime is 111029. The reversal of 111023 is 320111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320111 = 11 ⋅29101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111023 is a prime.

It is a super-2 number, since 2×111023² = 24652213058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111023.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 111023.

It is not an unprimeable number, because it can be changed into a prime (111029) 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 3 ways as a sum of consecutive naturals, for example, 5036 + ... + 5057.

It is an arithmetic number, because the mean of its divisors is an integer number (30282).

2¹¹¹⁰²³ is an apocalyptic number.

111023 is a deficient number, since it is larger than the sum of its proper divisors (10105).

111023 is a wasteful number, since it uses less digits than its factorization.

111023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10104.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 111023 is about 333.2011404542. The cubic root of 111023 is about 48.0622744951.

Adding to 111023 its reverse (320111), we get a palindrome (431134).

The spelling of 111023 in words is "one hundred eleven thousand, twenty-three", and thus it is an iban number.