343260521 has 2 divisors, whose sum is σ = 343260522. Its totient is φ = 343260520.

The previous prime is 343260461. The next prime is 343260523. The reversal of 343260521 is 125062343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276756496 + 66504025 = 16636^2 + 8155^2 .

It is a cyclic number.

It is not a de Polignac number, because 343260521 - 2⁶ = 343260457 is a prime.

Together with 343260523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (343260523) 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, 171630260 + 171630261.

It is an arithmetic number, because the mean of its divisors is an integer number (171630261).

Almost surely, 2^343260521 is an apocalyptic number.

It is an amenable number.

343260521 is a deficient number, since it is larger than the sum of its proper divisors (1).

343260521 is an equidigital number, since it uses as much as digits as its factorization.

343260521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 343260521 is about 18527.2912483180. The cubic root of 343260521 is about 700.1771803193.

The spelling of 343260521 in words is "three hundred forty-three million, two hundred sixty thousand, five hundred twenty-one".