111003123 has 16 divisors (see below), whose sum is σ = 184525056. Its totient is φ = 57663840.

The previous prime is 111003059. The next prime is 111003161. The reversal of 111003123 is 321300111.

It is not a de Polignac number, because 111003123 - 2⁶ = 111003059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111003099 and 111003108.

It is not an unprimeable number, because it can be changed into a prime (111003173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240036 + ... + 240497.

It is an arithmetic number, because the mean of its divisors is an integer number (11532816).

Almost surely, 2^111003123 is an apocalyptic number.

111003123 is a deficient number, since it is larger than the sum of its proper divisors (73521933).

111003123 is a wasteful number, since it uses less digits than its factorization.

111003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480554.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 111003123 is about 10535.8019628313. The cubic root of 111003123 is about 480.5940604789.

Adding to 111003123 its reverse (321300111), we get a palindrome (432303234).

The spelling of 111003123 in words is "one hundred eleven million, three thousand, one hundred twenty-three".