206315 has 4 divisors (see below), whose sum is σ = 247584. Its totient is φ = 165048.

The previous prime is 206303. The next prime is 206341. The reversal of 206315 is 513602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513602 = 2 ⋅256801.

It is a cyclic number.

It is not a de Polignac number, because 206315 - 2⁴ = 206299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206293 and 206302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20627 + ... + 20636.

It is an arithmetic number, because the mean of its divisors is an integer number (61896).

2²⁰⁶³¹⁵ is an apocalyptic number.

206315 is a deficient number, since it is larger than the sum of its proper divisors (41269).

206315 is an equidigital number, since it uses as much as digits as its factorization.

206315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41268.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 206315 is about 454.2191101220. The cubic root of 206315 is about 59.0894936007.

Adding to 206315 its reverse (513602), we get a palindrome (719917).

The spelling of 206315 in words is "two hundred six thousand, three hundred fifteen".