213103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
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 213103.
It is a congruent number.
2213103 is an apocalyptic number.
213103 is a wasteful number, since it uses less digits than its factorization.
213103 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 19384.
The square root of 213103 is about 461.6308048647. The cubic root of 213103 is about 59.7305510248.
Adding to 213103 its reverse (301312), we get a palindrome (514415).
Subtracting 213103 from its reverse (301312), we obtain a square (88209 = 2972).
The spelling of 213103 in words is "two hundred thirteen thousand, one hundred three".