204320215 has 8 divisors (see below), whose sum is σ = 267473808. Its totient is φ = 148596480.

The previous prime is 204320197. The next prime is 204320227. The reversal of 204320215 is 512023402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204320215 - 2²⁵ = 170765783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204320192 and 204320201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1857402 + ... + 1857511.

It is an arithmetic number, because the mean of its divisors is an integer number (33434226).

Almost surely, 2^204320215 is an apocalyptic number.

204320215 is a deficient number, since it is larger than the sum of its proper divisors (63153593).

204320215 is a wasteful number, since it uses less digits than its factorization.

204320215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714929.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 204320215 is about 14294.0622287718. The cubic root of 204320215 is about 588.9843821975.

Adding to 204320215 its reverse (512023402), we get a palindrome (716343617).

The spelling of 204320215 in words is "two hundred four million, three hundred twenty thousand, two hundred fifteen".