206313 has 4 divisors (see below), whose sum is σ = 275088. Its totient is φ = 137540.

The previous prime is 206303. The next prime is 206341. The reversal of 206313 is 313602.

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 206313 - 2⁵ = 206281 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206292 and 206301.

It is not an unprimeable number, because it can be changed into a prime (206303) 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, 34383 + ... + 34388.

It is an arithmetic number, because the mean of its divisors is an integer number (68772).

2²⁰⁶³¹³ is an apocalyptic number.

It is an amenable number.

206313 is a deficient number, since it is larger than the sum of its proper divisors (68775).

206313 is an equidigital number, since it uses as much as digits as its factorization.

206313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68774.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 206313 is about 454.2169085360. The cubic root of 206313 is about 59.0893026639.

Adding to 206313 its reverse (313602), we get a palindrome (519915).

The spelling of 206313 in words is "two hundred six thousand, three hundred thirteen".