11011203 has 24 divisors (see below), whose sum is σ = 19136000. Its totient is φ = 5960304.

The previous prime is 11011201. The next prime is 11011211. The reversal of 11011203 is 30211011.

11011203 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11011203 - 2¹ = 11011201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3403 + ... + 5796.

Almost surely, 2^11011203 is an apocalyptic number.

11011203 is a deficient number, since it is larger than the sum of its proper divisors (8124797).

11011203 is a wasteful number, since it uses less digits than its factorization.

11011203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9231 (or 9228 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 11011203 is about 3318.3132763499. The cubic root of 11011203 is about 222.4734841945.

Adding to 11011203 its reverse (30211011), we get a palindrome (41222214).

It can be divided in two parts, 1101 and 1203, that added together give a square (2304 = 48²).

The spelling of 11011203 in words is "eleven million, eleven thousand, two hundred three".