206340263 has 2 divisors, whose sum is σ = 206340264. Its totient is φ = 206340262.

The previous prime is 206340227. The next prime is 206340283. The reversal of 206340263 is 362043602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206340263 - 2⁸ = 206340007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206340223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103170131 + 103170132.

It is an arithmetic number, because the mean of its divisors is an integer number (103170132).

Almost surely, 2^206340263 is an apocalyptic number.

206340263 is a deficient number, since it is larger than the sum of its proper divisors (1).

206340263 is an equidigital number, since it uses as much as digits as its factorization.

206340263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 206340263 is about 14364.5488268863. The cubic root of 206340263 is about 590.9190531245.

Adding to 206340263 its reverse (362043602), we get a palindrome (568383865).

The spelling of 206340263 in words is "two hundred six million, three hundred forty thousand, two hundred sixty-three".