111117123 has 32 divisors (see below), whose sum is σ = 179323200. Its totient is φ = 67592448.

The previous prime is 111117101. The next prime is 111117131. The reversal of 111117123 is 321711111.

It is a happy number.

It is not a de Polignac number, because 111117123 - 2⁵ = 111117091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111117096 and 111117105.

It is not an unprimeable number, because it can be changed into a prime (111117133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29461 + ... + 33017.

It is an arithmetic number, because the mean of its divisors is an integer number (5603850).

Almost surely, 2^111117123 is an apocalyptic number.

111117123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111117123 is a deficient number, since it is larger than the sum of its proper divisors (68206077).

111117123 is a wasteful number, since it uses less digits than its factorization.

111117123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668 (or 3662 counting only the distinct ones).

The product of its digits is 42, while the sum is 18.

The square root of 111117123 is about 10541.2106989662. The cubic root of 111117123 is about 480.7585272569.

Adding to 111117123 its reverse (321711111), we get a palindrome (432828234).

The spelling of 111117123 in words is "one hundred eleven million, one hundred seventeen thousand, one hundred twenty-three".