304020313 has 2 divisors, whose sum is σ = 304020314. Its totient is φ = 304020312.

The previous prime is 304020287. The next prime is 304020319. The reversal of 304020313 is 313020403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296252944 + 7767369 = 17212^2 + 2787^2 .

It is a cyclic number.

It is not a de Polignac number, because 304020313 - 2⁵ = 304020281 is a prime.

It is not a weakly prime, because it can be changed into another prime (304020319) by changing a digit.

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 as a sum of consecutive naturals, namely, 152010156 + 152010157.

It is an arithmetic number, because the mean of its divisors is an integer number (152010157).

Almost surely, 2^304020313 is an apocalyptic number.

It is an amenable number.

304020313 is a deficient number, since it is larger than the sum of its proper divisors (1).

304020313 is an equidigital number, since it uses as much as digits as its factorization.

304020313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 304020313 is about 17436.1782796575. The cubic root of 304020313 is about 672.4100572996.

Adding to 304020313 its reverse (313020403), we get a palindrome (617040716).

The spelling of 304020313 in words is "three hundred four million, twenty thousand, three hundred thirteen".