199814231 has 2 divisors, whose sum is σ = 199814232. Its totient is φ = 199814230.

The previous prime is 199814221. The next prime is 199814233. The reversal of 199814231 is 132418991.

It is a strong prime.

It is an emirp because it is prime and its reverse (132418991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199814231 - 2¹⁴ = 199797847 is a prime.

It is a super-2 number, since 2×199814231² = 79851453820242722, which contains 22 as substring.

Together with 199814233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199814233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99907115 + 99907116.

It is an arithmetic number, because the mean of its divisors is an integer number (99907116).

Almost surely, 2^199814231 is an apocalyptic number.

199814231 is a deficient number, since it is larger than the sum of its proper divisors (1).

199814231 is an equidigital number, since it uses as much as digits as its factorization.

199814231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The square root of 199814231 is about 14135.5661718942. The cubic root of 199814231 is about 584.6224276031.

The spelling of 199814231 in words is "one hundred ninety-nine million, eight hundred fourteen thousand, two hundred thirty-one".