343325221 has 2 divisors, whose sum is σ = 343325222. Its totient is φ = 343325220.

The previous prime is 343325131. The next prime is 343325237. The reversal of 343325221 is 122523343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278522721 + 64802500 = 16689^2 + 8050^2 .

It is a cyclic number.

It is not a de Polignac number, because 343325221 - 2¹¹ = 343323173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343325261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171662610 + 171662611.

It is an arithmetic number, because the mean of its divisors is an integer number (171662611).

Almost surely, 2^343325221 is an apocalyptic number.

It is an amenable number.

343325221 is a deficient number, since it is larger than the sum of its proper divisors (1).

343325221 is an equidigital number, since it uses as much as digits as its factorization.

343325221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 343325221 is about 18529.0372388853. The cubic root of 343325221 is about 700.2211688886.

Adding to 343325221 its reverse (122523343), we get a palindrome (465848564).

The spelling of 343325221 in words is "three hundred forty-three million, three hundred twenty-five thousand, two hundred twenty-one".