204304261 has 4 divisors (see below), whose sum is σ = 233490592. Its totient is φ = 175117932.

The previous prime is 204304237. The next prime is 204304267. The reversal of 204304261 is 162403402.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-204304261 is a prime.

It is a super-2 number, since 2×204304261² = 83480462125512242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204304267) 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, 14593155 + ... + 14593168.

It is an arithmetic number, because the mean of its divisors is an integer number (58372648).

Almost surely, 2^204304261 is an apocalyptic number.

It is an amenable number.

204304261 is a deficient number, since it is larger than the sum of its proper divisors (29186331).

204304261 is an equidigital number, since it uses as much as digits as its factorization.

204304261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29186330.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 204304261 is about 14293.5041539855. The cubic root of 204304261 is about 588.9690518472.

Adding to 204304261 its reverse (162403402), we get a palindrome (366707663).

The spelling of 204304261 in words is "two hundred four million, three hundred four thousand, two hundred sixty-one".