11103203 has 4 divisors (see below), whose sum is σ = 11127648. Its totient is φ = 11078760.

The previous prime is 11103199. The next prime is 11103217. The reversal of 11103203 is 30230111.

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 11103203 - 2² = 11103199 is a prime.

It is a super-2 number, since 2×11103203² = 246562233718418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103263) 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, 11528 + ... + 12453.

It is an arithmetic number, because the mean of its divisors is an integer number (2781912).

Almost surely, 2^11103203 is an apocalyptic number.

11103203 is a deficient number, since it is larger than the sum of its proper divisors (24445).

11103203 is an equidigital number, since it uses as much as digits as its factorization.

11103203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24444.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 11103203 is about 3332.1469055250. The cubic root of 11103203 is about 223.0913646280.

Adding to 11103203 its reverse (30230111), we get a palindrome (41333314).

The spelling of 11103203 in words is "eleven million, one hundred three thousand, two hundred three".