343489217 has 2 divisors, whose sum is σ = 343489218. Its totient is φ = 343489216.

The previous prime is 343489177. The next prime is 343489219. The reversal of 343489217 is 712984343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325477681 + 18011536 = 18041^2 + 4244^2 .

It is a cyclic number.

It is not a de Polignac number, because 343489217 - 2¹⁰ = 343488193 is a prime.

Together with 343489219, 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 (343489219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171744608 + 171744609.

It is an arithmetic number, because the mean of its divisors is an integer number (171744609).

Almost surely, 2^343489217 is an apocalyptic number.

It is an amenable number.

343489217 is a deficient number, since it is larger than the sum of its proper divisors (1).

343489217 is an equidigital number, since it uses as much as digits as its factorization.

343489217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 343489217 is about 18533.4620888813. The cubic root of 343489217 is about 700.3326425823.

The spelling of 343489217 in words is "three hundred forty-three million, four hundred eighty-nine thousand, two hundred seventeen".