13231022320 has 40 divisors (see below), whose sum is σ = 32099615136. Its totient is φ = 5062303488.

The previous prime is 13231022291. The next prime is 13231022323. The reversal of 13231022320 is 2322013231.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231022323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3593547 + ... + 3597226.

Almost surely, 2^13231022320 is an apocalyptic number.

13231022320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231022320 is an abundant number, since it is smaller than the sum of its proper divisors (18868592816).

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

13231022320 is a wasteful number, since it uses less digits than its factorization.

13231022320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7190809 (or 7190803 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13231022320 its reverse (2322013231), we get a palindrome (15553035551).

The spelling of 13231022320 in words is "thirteen billion, two hundred thirty-one million, twenty-two thousand, three hundred twenty".