320243320 has 16 divisors (see below), whose sum is σ = 720547560. Its totient is φ = 128097312.

The previous prime is 320243311. The next prime is 320243369. The reversal of 320243320 is 23342023.

320243320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 4003002 + ... + 4003081.

Almost surely, 2^320243320 is an apocalyptic number.

It is an amenable number.

320243320 is an abundant number, since it is smaller than the sum of its proper divisors (400304240).

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

320243320 is a wasteful number, since it uses less digits than its factorization.

320243320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8006094 (or 8006090 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 320243320 is about 17895.3435284154. The cubic root of 320243320 is about 684.1636978103.

Adding to 320243320 its reverse (23342023), we get a palindrome (343585343).

It can be divided in two parts, 32024 and 3320, that added together give a square (35344 = 188²).

The spelling of 320243320 in words is "three hundred twenty million, two hundred forty-three thousand, three hundred twenty".