206224243 has 2 divisors, whose sum is σ = 206224244. Its totient is φ = 206224242.

The previous prime is 206224181. The next prime is 206224247. The reversal of 206224243 is 342422602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206224243 is a prime.

It is not a weakly prime, because it can be changed into another prime (206224247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103112121 + 103112122.

It is an arithmetic number, because the mean of its divisors is an integer number (103112122).

Almost surely, 2^206224243 is an apocalyptic number.

206224243 is a deficient number, since it is larger than the sum of its proper divisors (1).

206224243 is an equidigital number, since it uses as much as digits as its factorization.

206224243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 206224243 is about 14360.5098447096. The cubic root of 206224243 is about 590.8082793293.

Adding to 206224243 its reverse (342422602), we get a palindrome (548646845).

The spelling of 206224243 in words is "two hundred six million, two hundred twenty-four thousand, two hundred forty-three".