343320505 has 32 divisors (see below), whose sum is σ = 471684096. Its totient is φ = 237600000.

The previous prime is 343320479. The next prime is 343320541. The reversal of 343320505 is 505023343.

It is a happy number.

It is not a de Polignac number, because 343320505 - 2¹¹ = 343318457 is a prime.

It is a super-3 number, since 3×343320505³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 343320505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102355 + ... + 105655.

It is an arithmetic number, because the mean of its divisors is an integer number (14740128).

Almost surely, 2^343320505 is an apocalyptic number.

It is an amenable number.

343320505 is a deficient number, since it is larger than the sum of its proper divisors (128363591).

343320505 is a wasteful number, since it uses less digits than its factorization.

343320505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 343320505 is about 18528.9099787332. The cubic root of 343320505 is about 700.2179627370.

Adding to 343320505 its reverse (505023343), we get a palindrome (848343848).

The spelling of 343320505 in words is "three hundred forty-three million, three hundred twenty thousand, five hundred five".