11811203 has 2 divisors, whose sum is σ = 11811204. Its totient is φ = 11811202.

The previous prime is 11811193. The next prime is 11811221. The reversal of 11811203 is 30211811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11811203 - 2⁴ = 11811187 is a prime.

It is not a weakly prime, because it can be changed into another prime (11811253) 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 as a sum of consecutive naturals, namely, 5905601 + 5905602.

It is an arithmetic number, because the mean of its divisors is an integer number (5905602).

Almost surely, 2^11811203 is an apocalyptic number.

11811203 is a deficient number, since it is larger than the sum of its proper divisors (1).

11811203 is an equidigital number, since it uses as much as digits as its factorization.

11811203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 11811203 is about 3436.7430803015. The cubic root of 11811203 is about 227.7358372292.

The spelling of 11811203 in words is "eleven million, eight hundred eleven thousand, two hundred three".