11031203 has 4 divisors (see below), whose sum is σ = 11051160. Its totient is φ = 11011248.

The previous prime is 11031193. The next prime is 11031221. The reversal of 11031203 is 30213011.

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 11031203 - 2⁴ = 11031187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031253) 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, 9125 + ... + 10262.

It is an arithmetic number, because the mean of its divisors is an integer number (2762790).

Almost surely, 2^11031203 is an apocalyptic number.

11031203 is a deficient number, since it is larger than the sum of its proper divisors (19957).

11031203 is an equidigital number, since it uses as much as digits as its factorization.

11031203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19956.

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

The square root of 11031203 is about 3321.3254884157. The cubic root of 11031203 is about 222.6080979599.

Adding to 11031203 its reverse (30213011), we get a palindrome (41244214).

It can be divided in two parts, 110 and 31203, that added together give a palindrome (31313).

The spelling of 11031203 in words is "eleven million, thirty-one thousand, two hundred three".