206045213 has 18 divisors (see below), whose sum is σ = 232367226. Its totient is φ = 182564800.

The previous prime is 206045179. The next prime is 206045233. The reversal of 206045213 is 312540602.

It can be written as a sum of positive squares in 3 ways, for example, as 54804409 + 151240804 = 7403^2 + 12298^2 .

It is not a de Polignac number, because 206045213 - 2⁶ = 206045149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206045233) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 202895 + ... + 203907.

Almost surely, 2^206045213 is an apocalyptic number.

It is an amenable number.

206045213 is a deficient number, since it is larger than the sum of its proper divisors (26322013).

206045213 is a wasteful number, since it uses less digits than its factorization.

206045213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 206045213 is about 14354.2750774813. The cubic root of 206045213 is about 590.6372631777.

Adding to 206045213 its reverse (312540602), we get a palindrome (518585815).

The spelling of 206045213 in words is "two hundred six million, forty-five thousand, two hundred thirteen".