201813203 has 2 divisors, whose sum is σ = 201813204. Its totient is φ = 201813202.

The previous prime is 201813167. The next prime is 201813221. The reversal of 201813203 is 302318102.

201813203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201813203 - 2¹⁰ = 201812179 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (201812203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100906601 + 100906602.

It is an arithmetic number, because the mean of its divisors is an integer number (100906602).

Almost surely, 2^201813203 is an apocalyptic number.

201813203 is a deficient number, since it is larger than the sum of its proper divisors (1).

201813203 is an equidigital number, since it uses as much as digits as its factorization.

201813203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 201813203 is about 14206.0973880936. The cubic root of 201813203 is about 586.5655128988.

The spelling of 201813203 in words is "two hundred one million, eight hundred thirteen thousand, two hundred three".