13331444213 has 4 divisors (see below), whose sum is σ = 13351253868. Its totient is φ = 13311634560.

The previous prime is 13331444201. The next prime is 13331444219. The reversal of 13331444213 is 31244413331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31244413331 = 31 ⋅1007884301.

It can be written as a sum of positive squares in 2 ways, for example, as 4644831409 + 8686612804 = 68153^2 + 93202^2 .

It is a cyclic number.

It is not a de Polignac number, because 13331444213 - 2²⁶ = 13264335349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331444219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9903818 + ... + 9905163.

It is an arithmetic number, because the mean of its divisors is an integer number (3337813467).

Almost surely, 2^13331444213 is an apocalyptic number.

It is an amenable number.

13331444213 is a deficient number, since it is larger than the sum of its proper divisors (19809655).

13331444213 is an equidigital number, since it uses as much as digits as its factorization.

13331444213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19809654.

The product of its digits is 10368, while the sum is 29.

Adding to 13331444213 its reverse (31244413331), we get a palindrome (44575857544).

The spelling of 13331444213 in words is "thirteen billion, three hundred thirty-one million, four hundred forty-four thousand, two hundred thirteen".