343440017 has 2 divisors, whose sum is σ = 343440018. Its totient is φ = 343440016.

The previous prime is 343439989. The next prime is 343440023. The reversal of 343440017 is 710044343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325766401 + 17673616 = 18049^2 + 4204^2 .

It is an emirp because it is prime and its reverse (710044343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343440017 - 2¹⁶ = 343374481 is a prime.

It is not a weakly prime, because it can be changed into another prime (343440047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171720008 + 171720009.

It is an arithmetic number, because the mean of its divisors is an integer number (171720009).

Almost surely, 2^343440017 is an apocalyptic number.

It is an amenable number.

343440017 is a deficient number, since it is larger than the sum of its proper divisors (1).

343440017 is an equidigital number, since it uses as much as digits as its factorization.

343440017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 343440017 is about 18532.1347124394. The cubic root of 343440017 is about 700.2992033848.

The spelling of 343440017 in words is "three hundred forty-three million, four hundred forty thousand, seventeen".