343052509 has 2 divisors, whose sum is σ = 343052510. Its totient is φ = 343052508.

The previous prime is 343052497. The next prime is 343052531. The reversal of 343052509 is 905250343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248535225 + 94517284 = 15765^2 + 9722^2 .

It is a cyclic number.

It is not a de Polignac number, because 343052509 - 2²¹ = 340955357 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343052209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171526254 + 171526255.

It is an arithmetic number, because the mean of its divisors is an integer number (171526255).

Almost surely, 2^343052509 is an apocalyptic number.

It is an amenable number.

343052509 is a deficient number, since it is larger than the sum of its proper divisors (1).

343052509 is an equidigital number, since it uses as much as digits as its factorization.

343052509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 343052509 is about 18521.6767329527. The cubic root of 343052509 is about 700.0357185855.

The spelling of 343052509 in words is "three hundred forty-three million, fifty-two thousand, five hundred nine".