305343 has 16 divisors (see below), whose sum is σ = 464640. Its totient is φ = 198072.

The previous prime is 305339. The next prime is 305351. The reversal of 305343 is 343503.

It is a happy number.

It is not a de Polignac number, because 305343 - 2² = 305339 is a prime.

305343 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1030 + ... + 1292.

It is an arithmetic number, because the mean of its divisors is an integer number (29040).

2³⁰⁵³⁴³ is an apocalyptic number.

305343 is a deficient number, since it is larger than the sum of its proper divisors (159297).

305343 is a wasteful number, since it uses less digits than its factorization.

305343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 305343 is about 552.5785012105. The cubic root of 305343 is about 67.3383787569.

Adding to 305343 its reverse (343503), we get a palindrome (648846).

The spelling of 305343 in words is "three hundred five thousand, three hundred forty-three".