320231220012 has 60 divisors (see below), whose sum is σ = 913252007976. Its totient is φ = 97039762560.

The previous prime is 320231219999. The next prime is 320231220017. The reversal of 320231220012 is 210022132023.

320231220012 is a `hidden beast` number, since 320 + 2 + 312 + 20 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (320231220017) 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 19 ways as a sum of consecutive naturals, for example, 44922253 + ... + 44929380.

Almost surely, 2^320231220012 is an apocalyptic number.

It is an amenable number.

320231220012 is an abundant number, since it is smaller than the sum of its proper divisors (593020787964).

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

320231220012 is a wasteful number, since it uses less digits than its factorization.

320231220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89851660 (or 89851649 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 320231220012 its reverse (210022132023), we get a palindrome (530253352035).

The spelling of 320231220012 in words is "three hundred twenty billion, two hundred thirty-one million, two hundred twenty thousand, twelve".