206165313 has 6 divisors (see below), whose sum is σ = 297794354. Its totient is φ = 137443536.

The previous prime is 206165303. The next prime is 206165317. The reversal of 206165313 is 313561602.

206165313 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 653 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 164019249 + 42146064 = 12807^2 + 6492^2 .

It is not a de Polignac number, because 206165313 - 2⁶ = 206165249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206165317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11453620 + ... + 11453637.

Almost surely, 2^206165313 is an apocalyptic number.

It is an amenable number.

206165313 is a deficient number, since it is larger than the sum of its proper divisors (91629041).

206165313 is a wasteful number, since it uses less digits than its factorization.

206165313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22907263 (or 22907260 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 206165313 is about 14358.4578907346. The cubic root of 206165313 is about 590.7519981209.

The spelling of 206165313 in words is "two hundred six million, one hundred sixty-five thousand, three hundred thirteen".