13231003320 has 160 divisors (see below), whose sum is σ = 44770968000. Its totient is φ = 3504460032.

The previous prime is 13231003319. The next prime is 13231003337. The reversal of 13231003320 is 2330013231.

13231003320 is a `hidden beast` number, since 1 + 32 + 310 + 0 + 3 + 320 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 13231003293 and 13231003302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 469057 + ... + 496463.

It is an arithmetic number, because the mean of its divisors is an integer number (279818550).

Almost surely, 2^13231003320 is an apocalyptic number.

13231003320 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 13231003320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22385484000).

13231003320 is an abundant number, since it is smaller than the sum of its proper divisors (31539964680).

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

13231003320 is a wasteful number, since it uses less digits than its factorization.

13231003320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27579 (or 27566 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 13231003320 its reverse (2330013231), we get a palindrome (15561016551).

The spelling of 13231003320 in words is "thirteen billion, two hundred thirty-one million, three thousand, three hundred twenty".