13231331168 has 96 divisors (see below), whose sum is σ = 29304519552. Its totient is φ = 5828659200.

The previous prime is 13231331153. The next prime is 13231331213. The reversal of 13231331168 is 86113313231.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 1979480 + ... + 1986152.

It is an arithmetic number, because the mean of its divisors is an integer number (305255412).

Almost surely, 2^13231331168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13231331168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14652259776).

13231331168 is an abundant number, since it is smaller than the sum of its proper divisors (16073188384).

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

13231331168 is a wasteful number, since it uses less digits than its factorization.

13231331168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868 (or 6860 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

Adding to 13231331168 its reverse (86113313231), we get a palindrome (99344644399).

The spelling of 13231331168 in words is "thirteen billion, two hundred thirty-one million, three hundred thirty-one thousand, one hundred sixty-eight".