206143219 has 2 divisors, whose sum is σ = 206143220. Its totient is φ = 206143218.

The previous prime is 206143213. The next prime is 206143277. The reversal of 206143219 is 912341602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206143219 - 2²¹ = 204046067 is a prime.

It is a super-2 number, since 2×206143219² = 84990053479363922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206143213) 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, 103071609 + 103071610.

It is an arithmetic number, because the mean of its divisors is an integer number (103071610).

Almost surely, 2^206143219 is an apocalyptic number.

206143219 is a deficient number, since it is larger than the sum of its proper divisors (1).

206143219 is an equidigital number, since it uses as much as digits as its factorization.

206143219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 206143219 is about 14357.6884978049. The cubic root of 206143219 is about 590.7308944400.

The spelling of 206143219 in words is "two hundred six million, one hundred forty-three thousand, two hundred nineteen".