320443232 has 12 divisors (see below), whose sum is σ = 630872676. Its totient is φ = 160221600.

The previous prime is 320443231. The next prime is 320443261. The reversal of 320443232 is 232344023.

It is a junction number, because it is equal to n+sod(n) for n = 320443198 and 320443207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320443231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006894 + ... + 5006957.

It is an arithmetic number, because the mean of its divisors is an integer number (52572723).

Almost surely, 2^320443232 is an apocalyptic number.

320443232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320443232 is a deficient number, since it is larger than the sum of its proper divisors (310429444).

320443232 is a wasteful number, since it uses less digits than its factorization.

320443232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10013861 (or 10013853 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 320443232 is about 17900.9282440883. The cubic root of 320443232 is about 684.3060313365.

Adding to 320443232 its reverse (232344023), we get a palindrome (552787255).

The spelling of 320443232 in words is "three hundred twenty million, four hundred forty-three thousand, two hundred thirty-two".