343224221 has 16 divisors (see below), whose sum is σ = 357073920. Its totient is φ = 329715120.

The previous prime is 343224209. The next prime is 343224223. The reversal of 343224221 is 122422343.

It is a cyclic number.

It is not a de Polignac number, because 343224221 - 2²² = 339029917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343224223) 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 in 15 ways as a sum of consecutive naturals, for example, 698786 + ... + 699276.

It is an arithmetic number, because the mean of its divisors is an integer number (22317120).

Almost surely, 2^343224221 is an apocalyptic number.

It is an amenable number.

343224221 is a deficient number, since it is larger than the sum of its proper divisors (13849699).

343224221 is a wasteful number, since it uses less digits than its factorization.

343224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784.

The product of its digits is 2304, while the sum is 23.

The square root of 343224221 is about 18526.3115864977. The cubic root of 343224221 is about 700.1524980677.

Adding to 343224221 its reverse (122422343), we get a palindrome (465646564).

The spelling of 343224221 in words is "three hundred forty-three million, two hundred twenty-four thousand, two hundred twenty-one".