304312313 has 2 divisors, whose sum is σ = 304312314. Its totient is φ = 304312312.

The previous prime is 304312297. The next prime is 304312331. The reversal of 304312313 is 313213403.

Together with next prime (304312331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252587449 + 51724864 = 15893^2 + 7192^2 .

It is a cyclic number.

It is not a de Polignac number, because 304312313 - 2⁴ = 304312297 is a prime.

It is not a weakly prime, because it can be changed into another prime (304317313) 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, 152156156 + 152156157.

It is an arithmetic number, because the mean of its divisors is an integer number (152156157).

Almost surely, 2^304312313 is an apocalyptic number.

It is an amenable number.

304312313 is a deficient number, since it is larger than the sum of its proper divisors (1).

304312313 is an equidigital number, since it uses as much as digits as its factorization.

304312313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 304312313 is about 17444.5496645801. The cubic root of 304312313 is about 672.6252632158.

Adding to 304312313 its reverse (313213403), we get a palindrome (617525716).

The spelling of 304312313 in words is "three hundred four million, three hundred twelve thousand, three hundred thirteen".