204361 has 2 divisors, whose sum is σ = 204362. Its totient is φ = 204360.

The previous prime is 204359. The next prime is 204367. The reversal of 204361 is 163402.

204361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197136 + 7225 = 444^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 204361 - 2¹ = 204359 is a prime.

Together with 204359, it forms a pair of twin primes.

It is equal to p₁₈₃₃₁ and since 204361 and 18331 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (204367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102180 + 102181.

It is an arithmetic number, because the mean of its divisors is an integer number (102181).

2²⁰⁴³⁶¹ is an apocalyptic number.

It is an amenable number.

204361 is a deficient number, since it is larger than the sum of its proper divisors (1).

204361 is an equidigital number, since it uses as much as digits as its factorization.

204361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 204361 is about 452.0630487001. The cubic root of 204361 is about 58.9023569264.

Adding to 204361 its reverse (163402), we get a palindrome (367763).

It can be divided in two parts, 204 and 361, that added together give a palindrome (565).

The spelling of 204361 in words is "two hundred four thousand, three hundred sixty-one".