11203 has 4 divisors (see below), whose sum is σ = 11880. Its totient is φ = 10528.

The previous prime is 11197. The next prime is 11213. The reversal of 11203 is 30211.

11203 is digitally balanced in base 3, 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 not a de Polignac number, because 11203 - 2⁵ = 11171 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (11213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313 + ... + 346.

It is an arithmetic number, because the mean of its divisors is an integer number (2970).

2¹¹²⁰³ is an apocalyptic number.

11203 is a deficient number, since it is larger than the sum of its proper divisors (677).

11203 is an equidigital number, since it uses as much as digits as its factorization.

11203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 11203 is about 105.8442251613. The cubic root of 11203 is about 22.3757763221.

Adding to 11203 its reverse (30211), we get a palindrome (41414).

The spelling of 11203 in words is "eleven thousand, two hundred three", and thus it is an iban number.