199971203 has 2 divisors, whose sum is σ = 199971204. Its totient is φ = 199971202.

The previous prime is 199971193. The next prime is 199971209. The reversal of 199971203 is 302179991.

It is a strong prime.

It is an emirp because it is prime and its reverse (302179991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199971203 - 2¹⁴ = 199954819 is a prime.

It is not a weakly prime, because it can be changed into another prime (199971209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99985601 + 99985602.

It is an arithmetic number, because the mean of its divisors is an integer number (99985602).

Almost surely, 2^199971203 is an apocalyptic number.

199971203 is a deficient number, since it is larger than the sum of its proper divisors (1).

199971203 is an equidigital number, since it uses as much as digits as its factorization.

199971203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 199971203 is about 14141.1174593806. The cubic root of 199971203 is about 584.7754786491.

The spelling of 199971203 in words is "one hundred ninety-nine million, nine hundred seventy-one thousand, two hundred three".