206043217 has 2 divisors, whose sum is σ = 206043218. Its totient is φ = 206043216.

The previous prime is 206043209. The next prime is 206043259. The reversal of 206043217 is 712340602.

206043217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202322176 + 3721041 = 14224^2 + 1929^2 .

It is a cyclic number.

It is not a de Polignac number, because 206043217 - 2³ = 206043209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206043191 and 206043200.

It is not a weakly prime, because it can be changed into another prime (206040217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103021608 + 103021609.

It is an arithmetic number, because the mean of its divisors is an integer number (103021609).

Almost surely, 2^206043217 is an apocalyptic number.

It is an amenable number.

206043217 is a deficient number, since it is larger than the sum of its proper divisors (1).

206043217 is an equidigital number, since it uses as much as digits as its factorization.

206043217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 206043217 is about 14354.2055509875. The cubic root of 206043217 is about 590.6353559656.

Adding to 206043217 its reverse (712340602), we get a palindrome (918383819).

The spelling of 206043217 in words is "two hundred six million, forty-three thousand, two hundred seventeen".