343020317 has 2 divisors, whose sum is σ = 343020318. Its totient is φ = 343020316.

The previous prime is 343020313. The next prime is 343020343. The reversal of 343020317 is 713020343.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338780836 + 4239481 = 18406^2 + 2059^2 .

It is a cyclic number.

It is not a de Polignac number, because 343020317 - 2² = 343020313 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 343020292 and 343020301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343020313) 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, 171510158 + 171510159.

It is an arithmetic number, because the mean of its divisors is an integer number (171510159).

Almost surely, 2^343020317 is an apocalyptic number.

It is an amenable number.

343020317 is a deficient number, since it is larger than the sum of its proper divisors (1).

343020317 is an equidigital number, since it uses as much as digits as its factorization.

343020317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 343020317 is about 18520.8076767726. The cubic root of 343020317 is about 700.0138208156.

The spelling of 343020317 in words is "three hundred forty-three million, twenty thousand, three hundred seventeen".