11123203 has 16 divisors (see below), whose sum is σ = 14135296. Its totient is φ = 8514720.

The previous prime is 11123201. The next prime is 11123221. The reversal of 11123203 is 30232111.

It is a cyclic number.

It is not a de Polignac number, because 11123203 - 2¹ = 11123201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (11123201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 850 + ... + 4792.

It is an arithmetic number, because the mean of its divisors is an integer number (883456).

Almost surely, 2^11123203 is an apocalyptic number.

11123203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11123203 is a deficient number, since it is larger than the sum of its proper divisors (3012093).

11123203 is a wasteful number, since it uses less digits than its factorization.

11123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 11123203 is about 3335.1466234635. The cubic root of 11123203 is about 223.2252344362.

Adding to 11123203 its reverse (30232111), we get a palindrome (41355314).

The spelling of 11123203 in words is "eleven million, one hundred twenty-three thousand, two hundred three".