343003221 has 16 divisors (see below), whose sum is σ = 554349120. Its totient is φ = 207880560.

The previous prime is 343003151. The next prime is 343003229. The reversal of 343003221 is 122300343.

343003221 is a `hidden beast` number, since 343 + 0 + 0 + 322 + 1 = 666.

It is not a de Polignac number, because 343003221 - 2⁷ = 343003093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 343003194 and 343003203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343003229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577150 + ... + 577743.

It is an arithmetic number, because the mean of its divisors is an integer number (34646820).

Almost surely, 2^343003221 is an apocalyptic number.

It is an amenable number.

343003221 is a deficient number, since it is larger than the sum of its proper divisors (211345899).

343003221 is a wasteful number, since it uses less digits than its factorization.

343003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154913 (or 1154907 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 343003221 is about 18520.3461360742. The cubic root of 343003221 is about 700.0021911496.

Adding to 343003221 its reverse (122300343), we get a palindrome (465303564).

The spelling of 343003221 in words is "three hundred forty-three million, three thousand, two hundred twenty-one".