343866321 has 12 divisors (see below), whose sum is σ = 498011280. Its totient is φ = 228637080.

The previous prime is 343866287. The next prime is 343866323. The reversal of 343866321 is 123668343.

It is not a de Polignac number, because 343866321 - 2¹⁰ = 343865297 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (343866323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46995 + ... + 53816.

It is an arithmetic number, because the mean of its divisors is an integer number (41500940).

Almost surely, 2^343866321 is an apocalyptic number.

It is an amenable number.

343866321 is a deficient number, since it is larger than the sum of its proper divisors (154144959).

343866321 is a wasteful number, since it uses less digits than its factorization.

343866321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101196 (or 101193 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 343866321 is about 18543.6328964958. The cubic root of 343866321 is about 700.5888385450.

The spelling of 343866321 in words is "three hundred forty-three million, eight hundred sixty-six thousand, three hundred twenty-one".