206513107 has 2 divisors, whose sum is σ = 206513108. Its totient is φ = 206513106.

The previous prime is 206513077. The next prime is 206513143. The reversal of 206513107 is 701315602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206513107 - 2²³ = 198124499 is a prime.

It is equal to p_11419441 and since 206513107 and 11419441 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (206513207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103256553 + 103256554.

It is an arithmetic number, because the mean of its divisors is an integer number (103256554).

Almost surely, 2^206513107 is an apocalyptic number.

206513107 is a deficient number, since it is larger than the sum of its proper divisors (1).

206513107 is an equidigital number, since it uses as much as digits as its factorization.

206513107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 206513107 is about 14370.5639068201. The cubic root of 206513107 is about 591.0840044623.

Adding to 206513107 its reverse (701315602), we get a palindrome (907828709).

The spelling of 206513107 in words is "two hundred six million, five hundred thirteen thousand, one hundred seven".