320005346 has 4 divisors (see below), whose sum is σ = 480008022. Its totient is φ = 160002672.

The previous prime is 320005339. The next prime is 320005373. The reversal of 320005346 is 643500023.

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

It can be written as a sum of positive squares in only one way, i.e., 319015321 + 990025 = 17861^2 + 995^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 80001335 + ... + 80001338.

Almost surely, 2^320005346 is an apocalyptic number.

320005346 is a deficient number, since it is larger than the sum of its proper divisors (160002676).

320005346 is a wasteful number, since it uses less digits than its factorization.

320005346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160002675.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 320005346 is about 17888.6932446168. The cubic root of 320005346 is about 683.9941876209.

Adding to 320005346 its reverse (643500023), we get a palindrome (963505369).

The spelling of 320005346 in words is "three hundred twenty million, five thousand, three hundred forty-six".