3231201321320 has 128 divisors (see below), whose sum is σ = 8798486457600. Its totient is φ = 1042563158016.

The previous prime is 3231201321319. The next prime is 3231201321323. The reversal of 3231201321320 is 231231021323.

It is a super-2 number, since 2×3231201321320² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3231201321323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53343611 + ... + 53404149.

It is an arithmetic number, because the mean of its divisors is an integer number (68738175450).

Almost surely, 2^{3231201321320} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3231201321320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4399243228800).

3231201321320 is an abundant number, since it is smaller than the sum of its proper divisors (5567285136280).

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

3231201321320 is a wasteful number, since it uses less digits than its factorization.

3231201321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71787 (or 71783 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 3231201321320 its reverse (231231021323), we get a palindrome (3462432342643).

The spelling of 3231201321320 in words is "three trillion, two hundred thirty-one billion, two hundred one million, three hundred twenty-one thousand, three hundred twenty".