111203023 has 16 divisors (see below), whose sum is σ = 118310400. Its totient is φ = 104358240.

The previous prime is 111203003. The next prime is 111203033. The reversal of 111203023 is 320302111.

It is a de Polignac number, because none of the positive numbers 2^k-111203023 is a prime.

It is a super-2 number, since 2×111203023² = 24732224648677058, 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 = 111202994 and 111203012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175918 + ... + 176548.

It is an arithmetic number, because the mean of its divisors is an integer number (7394400).

Almost surely, 2^111203023 is an apocalyptic number.

111203023 is a deficient number, since it is larger than the sum of its proper divisors (7107377).

111203023 is a wasteful number, since it uses less digits than its factorization.

111203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 111203023 is about 10545.2843963546. The cubic root of 111203023 is about 480.8823801167.

Adding to 111203023 its reverse (320302111), we get a palindrome (431505134).

The spelling of 111203023 in words is "one hundred eleven million, two hundred three thousand, twenty-three".