199313217 has 24 divisors (see below), whose sum is σ = 300789216. Its totient is φ = 131883552.

The previous prime is 199313209. The next prime is 199313243. The reversal of 199313217 is 712313991.

It is a happy number.

It is not a de Polignac number, because 199313217 - 2³ = 199313209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199313267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30298 + ... + 36284.

It is an arithmetic number, because the mean of its divisors is an integer number (12532884).

Almost surely, 2^199313217 is an apocalyptic number.

It is an amenable number.

199313217 is a deficient number, since it is larger than the sum of its proper divisors (101475999).

199313217 is an equidigital number, since it uses as much as digits as its factorization.

199313217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6139 (or 6127 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 199313217 is about 14117.8332969334. The cubic root of 199313217 is about 584.1333914116.

The spelling of 199313217 in words is "one hundred ninety-nine million, three hundred thirteen thousand, two hundred seventeen".