13331212344 has 96 divisors (see below), whose sum is σ = 37701780480. Its totient is φ = 4247529792.

The previous prime is 13331212343. The next prime is 13331212393. The reversal of 13331212344 is 44321213331.

It is a happy number.

13331212344 is a `hidden beast` number, since 1 + 3 + 3 + 312 + 1 + 2 + 344 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331212343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4408417 + ... + 4411439.

It is an arithmetic number, because the mean of its divisors is an integer number (392726880).

Almost surely, 2^13331212344 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 13331212344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18850890240).

13331212344 is an abundant number, since it is smaller than the sum of its proper divisors (24370568136).

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

13331212344 is a wasteful number, since it uses less digits than its factorization.

13331212344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721 (or 5714 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 13331212344 its reverse (44321213331), we get a palindrome (57652425675).

The spelling of 13331212344 in words is "thirteen billion, three hundred thirty-one million, two hundred twelve thousand, three hundred forty-four".