12031201320 has 64 divisors (see below), whose sum is σ = 36153285120. Its totient is φ = 3203015424.

The previous prime is 12031201279. The next prime is 12031201327. The reversal of 12031201320 is 2310213021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12031201320.

It is not an unprimeable number, because it can be changed into a prime (12031201327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9747 + ... + 155426.

It is an arithmetic number, because the mean of its divisors is an integer number (564895080).

Almost surely, 2^12031201320 is an apocalyptic number.

12031201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12031201320 is an abundant number, since it is smaller than the sum of its proper divisors (24122083800).

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

12031201320 is a wasteful number, since it uses less digits than its factorization.

12031201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165794 (or 165790 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12031201320 its reverse (2310213021), we get a palindrome (14341414341).

The spelling of 12031201320 in words is "twelve billion, thirty-one million, two hundred one thousand, three hundred twenty".