13012323320 has 64 divisors (see below), whose sum is σ = 29638224000. Its totient is φ = 5140968448.

The previous prime is 13012323283. The next prime is 13012323323. The reversal of 13012323320 is 2332321031.

13012323320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13012323292 and 13012323301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012323323) 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 15 ways as a sum of consecutive naturals, for example, 5634326 + ... + 5636634.

It is an arithmetic number, because the mean of its divisors is an integer number (463097250).

Almost surely, 2^13012323320 is an apocalyptic number.

13012323320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13012323320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14819112000).

13012323320 is an abundant number, since it is smaller than the sum of its proper divisors (16625900680).

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

13012323320 is a wasteful number, since it uses less digits than its factorization.

13012323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992 (or 3988 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13012323320 its reverse (2332321031), we get a palindrome (15344644351).

The spelling of 13012323320 in words is "thirteen billion, twelve million, three hundred twenty-three thousand, three hundred twenty".