343058520509 has 2 divisors, whose sum is σ = 343058520510. Its totient is φ = 343058520508.

The previous prime is 343058520503. The next prime is 343058520577. The reversal of 343058520509 is 905025850343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316269014884 + 26789505625 = 562378^2 + 163675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343058520509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343058520509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343058520503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171529260254 + 171529260255.

It is an arithmetic number, because the mean of its divisors is an integer number (171529260255).

Almost surely, 2^343058520509 is an apocalyptic number.

It is an amenable number.

343058520509 is a deficient number, since it is larger than the sum of its proper divisors (1).

343058520509 is an equidigital number, since it uses as much as digits as its factorization.

343058520509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 343058520509 in words is "three hundred forty-three billion, fifty-eight million, five hundred twenty thousand, five hundred nine".