320140304 has 20 divisors (see below), whose sum is σ = 676660560. Its totient is φ = 145518240.

The previous prime is 320140279. The next prime is 320140307. The reversal of 320140304 is 403041023.

It is a super-3 number, since 3×320140304³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (320140307) 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 3 ways as a sum of consecutive naturals, for example, 909314 + ... + 909665.

It is an arithmetic number, because the mean of its divisors is an integer number (33833028).

Almost surely, 2^320140304 is an apocalyptic number.

It is an amenable number.

320140304 is an abundant number, since it is smaller than the sum of its proper divisors (356520256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320140304 is a wasteful number, since it uses less digits than its factorization.

320140304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818998 (or 1818992 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 320140304 is about 17892.4650062533. The cubic root of 320140304 is about 684.0903292582.

Adding to 320140304 its reverse (403041023), we get a palindrome (723181327).

The spelling of 320140304 in words is "three hundred twenty million, one hundred forty thousand, three hundred four".