304481 has 2 divisors, whose sum is σ = 304482. Its totient is φ = 304480.

The previous prime is 304477. The next prime is 304489. The reversal of 304481 is 184403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234256 + 70225 = 484^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 304481 - 2² = 304477 is a prime.

It is a super-2 number, since 2×304481² = 185417358722, which contains 22 as substring.

It is equal to p₂₆₃₆₃ and since 304481 and 26363 have the same sum of digits, it is a Honaker prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 304481.

It is not a weakly prime, because it can be changed into another prime (304489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152240 + 152241.

It is an arithmetic number, because the mean of its divisors is an integer number (152241).

2³⁰⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

304481 is a deficient number, since it is larger than the sum of its proper divisors (1).

304481 is an equidigital number, since it uses as much as digits as its factorization.

304481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 304481 is about 551.7979702754. The cubic root of 304481 is about 67.2749523912.

Adding to 304481 its reverse (184403), we get a palindrome (488884).

It can be divided in two parts, 3044 and 81, that added together give a 5-th power (3125 = 5⁵).

The spelling of 304481 in words is "three hundred four thousand, four hundred eighty-one".