305420343 has 8 divisors (see below), whose sum is σ = 410336256. Its totient is φ = 202059000.

The previous prime is 305420303. The next prime is 305420359. The reversal of 305420343 is 343024503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 305420343 - 2⁶ = 305420279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305420303) 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 7 ways as a sum of consecutive naturals, for example, 388183 + ... + 388968.

It is an arithmetic number, because the mean of its divisors is an integer number (51292032).

Almost surely, 2^305420343 is an apocalyptic number.

305420343 is a deficient number, since it is larger than the sum of its proper divisors (104915913).

305420343 is a wasteful number, since it uses less digits than its factorization.

305420343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777285.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 305420343 is about 17476.2794381413. The cubic root of 305420343 is about 673.4406385259.

Adding to 305420343 its reverse (343024503), we get a palindrome (648444846).

The spelling of 305420343 in words is "three hundred five million, four hundred twenty thousand, three hundred forty-three".