343304513 has 2 divisors, whose sum is σ = 343304514. Its totient is φ = 343304512.

The previous prime is 343304491. The next prime is 343304519. The reversal of 343304513 is 315403343.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339591184 + 3713329 = 18428^2 + 1927^2 .

It is an emirp because it is prime and its reverse (315403343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343304513 - 2¹⁴ = 343288129 is a prime.

It is not a weakly prime, because it can be changed into another prime (343304519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171652256 + 171652257.

It is an arithmetic number, because the mean of its divisors is an integer number (171652257).

Almost surely, 2^343304513 is an apocalyptic number.

It is an amenable number.

343304513 is a deficient number, since it is larger than the sum of its proper divisors (1).

343304513 is an equidigital number, since it uses as much as digits as its factorization.

343304513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 343304513 is about 18528.4784318627. The cubic root of 343304513 is about 700.2070904283.

Adding to 343304513 its reverse (315403343), we get a palindrome (658707856).

The spelling of 343304513 in words is "three hundred forty-three million, three hundred four thousand, five hundred thirteen".