343291 has 4 divisors (see below), whose sum is σ = 369712. Its totient is φ = 316872.

The previous prime is 343289. The next prime is 343303. The reversal of 343291 is 192343.

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 343291 - 2¹ = 343289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343261) 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, 13191 + ... + 13216.

It is an arithmetic number, because the mean of its divisors is an integer number (92428).

2³⁴³²⁹¹ is an apocalyptic number.

343291 is a deficient number, since it is larger than the sum of its proper divisors (26421).

343291 is a wasteful number, since it uses less digits than its factorization.

343291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26420.

The product of its digits is 648, while the sum is 22.

The square root of 343291 is about 585.9104027068. The cubic root of 343291 is about 70.0197903227.

The spelling of 343291 in words is "three hundred forty-three thousand, two hundred ninety-one".