200243191 has 2 divisors, whose sum is σ = 200243192. Its totient is φ = 200243190.

The previous prime is 200243179. The next prime is 200243237. The reversal of 200243191 is 191342002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200243191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200243111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100121595 + 100121596.

It is an arithmetic number, because the mean of its divisors is an integer number (100121596).

Almost surely, 2^200243191 is an apocalyptic number.

200243191 is a deficient number, since it is larger than the sum of its proper divisors (1).

200243191 is an equidigital number, since it uses as much as digits as its factorization.

200243191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 200243191 is about 14150.7311118543. The cubic root of 200243191 is about 585.0404832334.

Adding to 200243191 its reverse (191342002), we get a palindrome (391585193).

The spelling of 200243191 in words is "two hundred million, two hundred forty-three thousand, one hundred ninety-one".