It is a semiprime because it is the product of two primes.
It is a D-number.
It is a Duffinian number.
111603 is a lucky number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 111603.
2111603 is an apocalyptic number.
111603 is an equidigital number, since it uses as much as digits as its factorization.
111603 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 37204.
The square root of 111603 is about 334.0703518722. The cubic root of 111603 is about 48.1458238998.
Adding to 111603 its reverse (306111), we get a palindrome (417714).
The spelling of 111603 in words is "one hundred eleven thousand, six hundred three".