206513113 has 4 divisors (see below), whose sum is σ = 215491968. Its totient is φ = 197534260.

The previous prime is 206513107. The next prime is 206513143. The reversal of 206513113 is 311315602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206513113 - 2⁹ = 206512601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206513143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4489393 + ... + 4489438.

It is an arithmetic number, because the mean of its divisors is an integer number (53872992).

Almost surely, 2^206513113 is an apocalyptic number.

206513113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

206513113 is a deficient number, since it is larger than the sum of its proper divisors (8978855).

206513113 is an equidigital number, since it uses as much as digits as its factorization.

206513113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8978854.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 206513113 is about 14370.5641155802. The cubic root of 206513113 is about 591.0840101867.

Adding to 206513113 its reverse (311315602), we get a palindrome (517828715).

The spelling of 206513113 in words is "two hundred six million, five hundred thirteen thousand, one hundred thirteen".