816203 has 2 divisors, whose sum is σ = 816204. Its totient is φ = 816202.

The previous prime is 816191. The next prime is 816209. The reversal of 816203 is 302618.

816203 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 816203 - 2¹⁶ = 750667 is a prime.

It is not a weakly prime, because it can be changed into another prime (816209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408101 + 408102.

It is an arithmetic number, because the mean of its divisors is an integer number (408102).

2⁸¹⁶²⁰³ is an apocalyptic number.

816203 is a deficient number, since it is larger than the sum of its proper divisors (1).

816203 is an equidigital number, since it uses as much as digits as its factorization.

816203 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 816203 is about 903.4395386521. The cubic root of 816203 is about 93.4543229665.

The spelling of 816203 in words is "eight hundred sixteen thousand, two hundred three".