343709 has 2 divisors, whose sum is σ = 343710. Its totient is φ = 343708.

The previous prime is 343687. The next prime is 343727. The reversal of 343709 is 907343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302500 + 41209 = 550^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 343709 - 2¹² = 339613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171854 + 171855.

It is an arithmetic number, because the mean of its divisors is an integer number (171855).

2³⁴³⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

343709 is a deficient number, since it is larger than the sum of its proper divisors (1).

343709 is an equidigital number, since it uses as much as digits as its factorization.

343709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 343709 is about 586.2670040178. The cubic root of 343709 is about 70.0481980984.

The spelling of 343709 in words is "three hundred forty-three thousand, seven hundred nine".