13311123213 has 4 divisors (see below), whose sum is σ = 17748164288. Its totient is φ = 8874082140.

The previous prime is 13311123209. The next prime is 13311123223. The reversal of 13311123213 is 31232111331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31232111331 = 3 ⋅10410703777.

It is not a de Polignac number, because 13311123213 - 2² = 13311123209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13311123213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311123223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2218520533 + ... + 2218520538.

It is an arithmetic number, because the mean of its divisors is an integer number (4437041072).

Almost surely, 2^13311123213 is an apocalyptic number.

It is an amenable number.

13311123213 is a deficient number, since it is larger than the sum of its proper divisors (4437041075).

13311123213 is an equidigital number, since it uses as much as digits as its factorization.

13311123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4437041074.

The product of its digits is 324, while the sum is 21.

Adding to 13311123213 its reverse (31232111331), we get a palindrome (44543234544).

The spelling of 13311123213 in words is "thirteen billion, three hundred eleven million, one hundred twenty-three thousand, two hundred thirteen".