320321012 has 24 divisors (see below), whose sum is σ = 612685920. Its totient is φ = 145323360.

The previous prime is 320321011. The next prime is 320321059. The reversal of 320321012 is 210123023.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320321011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17414 + ... + 30722.

It is an arithmetic number, because the mean of its divisors is an integer number (25528580).

Almost surely, 2^320321012 is an apocalyptic number.

It is an amenable number.

320321012 is a deficient number, since it is larger than the sum of its proper divisors (292364908).

320321012 is a wasteful number, since it uses less digits than its factorization.

320321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13871 (or 13869 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 320321012 is about 17897.5141290627. The cubic root of 320321012 is about 684.2190200656.

Adding to 320321012 its reverse (210123023), we get a palindrome (530444035).

The spelling of 320321012 in words is "three hundred twenty million, three hundred twenty-one thousand, twelve".