13312421232 has 160 divisors (see below), whose sum is σ = 39214990080. Its totient is φ = 3854376960.

The previous prime is 13312421209. The next prime is 13312421279. The reversal of 13312421232 is 23212421331.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1480783 + ... + 1489745.

It is an arithmetic number, because the mean of its divisors is an integer number (245093688).

Almost surely, 2^13312421232 is an apocalyptic number.

13312421232 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 13312421232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19607495040).

13312421232 is an abundant number, since it is smaller than the sum of its proper divisors (25902568848).

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

13312421232 is a wasteful number, since it uses less digits than its factorization.

13312421232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111 (or 9105 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 13312421232 its reverse (23212421331), we get a palindrome (36524842563).

Subtracting 13312421232 from its reverse (23212421331), we obtain a palindrome (9900000099).

The spelling of 13312421232 in words is "thirteen billion, three hundred twelve million, four hundred twenty-one thousand, two hundred thirty-two".