11130203 has 6 divisors (see below), whose sum is σ = 12947436. Its totient is φ = 9540132.

The previous prime is 11130199. The next prime is 11130221. The reversal of 11130203 is 30203111.

It is not a de Polignac number, because 11130203 - 2² = 11130199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11130253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113525 + ... + 113622.

It is an arithmetic number, because the mean of its divisors is an integer number (2157906).

Almost surely, 2^11130203 is an apocalyptic number.

11130203 is a deficient number, since it is larger than the sum of its proper divisors (1817233).

11130203 is an equidigital number, since it uses as much as digits as its factorization.

11130203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227161 (or 227154 counting only the distinct ones).

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

The square root of 11130203 is about 3336.1958875342. The cubic root of 11130203 is about 223.2720509563.

Adding to 11130203 its reverse (30203111), we get a palindrome (41333314).

It can be divided in two parts, 111 and 30203, that multiplied together give a palindrome (3352533).

The spelling of 11130203 in words is "eleven million, one hundred thirty thousand, two hundred three".