343213211 has 4 divisors (see below), whose sum is σ = 374414424. Its totient is φ = 312012000.

The previous prime is 343213193. The next prime is 343213253. The reversal of 343213211 is 112312343.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 343213211 - 2¹⁴ = 343196827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343213271) 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 3 ways as a sum of consecutive naturals, for example, 15600590 + ... + 15600611.

It is an arithmetic number, because the mean of its divisors is an integer number (93603606).

Almost surely, 2^343213211 is an apocalyptic number.

343213211 is a deficient number, since it is larger than the sum of its proper divisors (31201213).

343213211 is a wasteful number, since it uses less digits than its factorization.

343213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31201212.

The product of its digits is 432, while the sum is 20.

The square root of 343213211 is about 18526.0144391609. The cubic root of 343213211 is about 700.1450114541.

Adding to 343213211 its reverse (112312343), we get a palindrome (455525554).

The spelling of 343213211 in words is "three hundred forty-three million, two hundred thirteen thousand, two hundred eleven".