343666313 has 2 divisors, whose sum is σ = 343666314. Its totient is φ = 343666312.

The previous prime is 343666307. The next prime is 343666331. The reversal of 343666313 is 313666343.

Together with next prime (343666331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327320464 + 16345849 = 18092^2 + 4043^2 .

It is an emirp because it is prime and its reverse (313666343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343666313 - 2¹² = 343662217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (343666333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171833156 + 171833157.

It is an arithmetic number, because the mean of its divisors is an integer number (171833157).

Almost surely, 2^343666313 is an apocalyptic number.

It is an amenable number.

343666313 is a deficient number, since it is larger than the sum of its proper divisors (1).

343666313 is an equidigital number, since it uses as much as digits as its factorization.

343666313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 35.

The square root of 343666313 is about 18538.2392098063. The cubic root of 343666313 is about 700.4529809554.

The spelling of 343666313 in words is "three hundred forty-three million, six hundred sixty-six thousand, three hundred thirteen".