204347 has 8 divisors (see below), whose sum is σ = 240240. Its totient is φ = 171360.

The previous prime is 204331. The next prime is 204353. The reversal of 204347 is 743402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 204347 - 2⁴ = 204331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204367) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 572 + ... + 857.

It is an arithmetic number, because the mean of its divisors is an integer number (30030).

2²⁰⁴³⁴⁷ is an apocalyptic number.

204347 is a deficient number, since it is larger than the sum of its proper divisors (35893).

204347 is a wasteful number, since it uses less digits than its factorization.

204347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 204347 is about 452.0475638691. The cubic root of 204347 is about 58.9010118364.

Adding to 204347 its reverse (743402), we get a palindrome (947749).

The spelling of 204347 in words is "two hundred four thousand, three hundred forty-seven", and thus it is an iban number.