206213207 has 2 divisors, whose sum is σ = 206213208. Its totient is φ = 206213206.

The previous prime is 206213177. The next prime is 206213221. The reversal of 206213207 is 702312602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206213207 - 2⁶ = 206213143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206213237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103106603 + 103106604.

It is an arithmetic number, because the mean of its divisors is an integer number (103106604).

Almost surely, 2^206213207 is an apocalyptic number.

206213207 is a deficient number, since it is larger than the sum of its proper divisors (1).

206213207 is an equidigital number, since it uses as much as digits as its factorization.

206213207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 206213207 is about 14360.1255913728. The cubic root of 206213207 is about 590.7977401925.

Adding to 206213207 its reverse (702312602), we get a palindrome (908525809).

The spelling of 206213207 in words is "two hundred six million, two hundred thirteen thousand, two hundred seven".