320143012 has 24 divisors (see below), whose sum is σ = 645958656. Its totient is φ = 135988608.

The previous prime is 320143009. The next prime is 320143013. The reversal of 320143012 is 210341023.

It is a happy number.

It is a super-3 number, since 3×320143012³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (320143013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47428 + ... + 53755.

It is an arithmetic number, because the mean of its divisors is an integer number (26914944).

Almost surely, 2^320143012 is an apocalyptic number.

It is an amenable number.

320143012 is an abundant number, since it is smaller than the sum of its proper divisors (325815644).

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

320143012 is a wasteful number, since it uses less digits than its factorization.

320143012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101307 (or 101305 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 320143012 is about 17892.5406804065. The cubic root of 320143012 is about 684.0922581118.

Adding to 320143012 its reverse (210341023), we get a palindrome (530484035).

The spelling of 320143012 in words is "three hundred twenty million, one hundred forty-three thousand, twelve".