320445346 has 8 divisors (see below), whose sum is σ = 517642524. Its totient is φ = 147897840.

The previous prime is 320445319. The next prime is 320445347. The reversal of 320445346 is 643544023.

It can be written as a sum of positive squares in 2 ways, for example, as 320016321 + 429025 = 17889^2 + 655^2 .

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

It is not an unprimeable number, because it can be changed into a prime (320445347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6162385 + ... + 6162436.

Almost surely, 2^320445346 is an apocalyptic number.

320445346 is a deficient number, since it is larger than the sum of its proper divisors (197197178).

320445346 is a wasteful number, since it uses less digits than its factorization.

320445346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12324836.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 320445346 is about 17900.9872912083. The cubic root of 320445346 is about 684.3075361478.

Adding to 320445346 its reverse (643544023), we get a palindrome (963989369).

The spelling of 320445346 in words is "three hundred twenty million, four hundred forty-five thousand, three hundred forty-six".