13231030320 has 160 divisors (see below), whose sum is σ = 45617883840. Its totient is φ = 3524843520.

The previous prime is 13231030243. The next prime is 13231030321. The reversal of 13231030320 is 2303013231.

13231030320 is a `hidden beast` number, since 1 + 3 + 2 + 310 + 30 + 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 = 13231030293 and 13231030302.

It is not an unprimeable number, because it can be changed into a prime (13231030321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2851042 + ... + 2855678.

It is an arithmetic number, because the mean of its divisors is an integer number (285111774).

Almost surely, 2^13231030320 is an apocalyptic number.

13231030320 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 13231030320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22808941920).

13231030320 is an abundant number, since it is smaller than the sum of its proper divisors (32386853520).

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

13231030320 is a wasteful number, since it uses less digits than its factorization.

13231030320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5980 (or 5968 counting only the distinct ones).

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

Adding to 13231030320 its reverse (2303013231), we get a palindrome (15534043551).

The spelling of 13231030320 in words is "thirteen billion, two hundred thirty-one million, thirty thousand, three hundred twenty".