343340281 has 2 divisors, whose sum is σ = 343340282. Its totient is φ = 343340280.

The previous prime is 343340237. The next prime is 343340287. The reversal of 343340281 is 182043343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258405625 + 84934656 = 16075^2 + 9216^2 .

It is an emirp because it is prime and its reverse (182043343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343340281 - 2¹³ = 343332089 is a prime.

It is a super-3 number, since 3×343340281³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (343340287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171670140 + 171670141.

It is an arithmetic number, because the mean of its divisors is an integer number (171670141).

Almost surely, 2^343340281 is an apocalyptic number.

It is an amenable number.

343340281 is a deficient number, since it is larger than the sum of its proper divisors (1).

343340281 is an equidigital number, since it uses as much as digits as its factorization.

343340281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 343340281 is about 18529.4436235954. The cubic root of 343340281 is about 700.2314071661.

The spelling of 343340281 in words is "three hundred forty-three million, three hundred forty thousand, two hundred eighty-one".