320144232 has 32 divisors (see below), whose sum is σ = 808617600. Its totient is φ = 105613824.

The previous prime is 320144189. The next prime is 320144249. The reversal of 320144232 is 232441023.

It is a junction number, because it is equal to n+sod(n) for n = 320144199 and 320144208.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 66432 + ... + 71087.

It is an arithmetic number, because the mean of its divisors is an integer number (25269300).

Almost surely, 2^320144232 is an apocalyptic number.

It is an amenable number.

320144232 is an abundant number, since it is smaller than the sum of its proper divisors (488473368).

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

320144232 is a wasteful number, since it uses less digits than its factorization.

320144232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137625 (or 137621 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 320144232 is about 17892.5747727933. The cubic root of 320144232 is about 684.0931270896.

Adding to 320144232 its reverse (232441023), we get a palindrome (552585255).

The spelling of 320144232 in words is "three hundred twenty million, one hundred forty-four thousand, two hundred thirty-two".