13231332312 has 128 divisors (see below), whose sum is σ = 37313568000. Its totient is φ = 3874521600.

The previous prime is 13231332253. The next prime is 13231332341. The reversal of 13231332312 is 21323313231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1450887 + ... + 1459977.

It is an arithmetic number, because the mean of its divisors is an integer number (291512250).

Almost surely, 2^13231332312 is an apocalyptic number.

13231332312 is a gapful number since it is divisible by the number (12) 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 13231332312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18656784000).

13231332312 is an abundant number, since it is smaller than the sum of its proper divisors (24082235688).

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

13231332312 is a wasteful number, since it uses less digits than its factorization.

13231332312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9297 (or 9293 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

Adding to 13231332312 its reverse (21323313231), we get a palindrome (34554645543).

It can be divided in two parts, 13231 and 332312, that added together give a palindrome (345543).

The spelling of 13231332312 in words is "thirteen billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred twelve".