13231032320 has 192 divisors, whose sum is σ = 35005763520. Its totient is φ = 4759552000.

The previous prime is 13231032319. The next prime is 13231032349. The reversal of 13231032320 is 2323013231.

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 = 13231032292 and 13231032301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11376059 + ... + 11377221.

It is an arithmetic number, because the mean of its divisors is an integer number (182321685).

Almost surely, 2^13231032320 is an apocalyptic number.

13231032320 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 13231032320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17502881760).

13231032320 is an abundant number, since it is smaller than the sum of its proper divisors (21774731200).

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

13231032320 is a wasteful number, since it uses less digits than its factorization.

13231032320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302 (or 1282 counting only the distinct ones).

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

Adding to 13231032320 its reverse (2323013231), we get a palindrome (15554045551).

The spelling of 13231032320 in words is "thirteen billion, two hundred thirty-one million, thirty-two thousand, three hundred twenty".