13312213543 has 4 divisors (see below), whose sum is σ = 13313067880. Its totient is φ = 13311359208.

The previous prime is 13312213531. The next prime is 13312213591. The reversal of 13312213543 is 34531221331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34531221331 = 24623 ⋅1402397.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13312213543 is a prime.

It is a super-2 number, since 2×13312213543² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312273543) 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, 403353 + ... + 435106.

It is an arithmetic number, because the mean of its divisors is an integer number (3328266970).

Almost surely, 2^13312213543 is an apocalyptic number.

13312213543 is a deficient number, since it is larger than the sum of its proper divisors (854337).

13312213543 is an equidigital number, since it uses as much as digits as its factorization.

13312213543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854336.

The product of its digits is 6480, while the sum is 28.

Adding to 13312213543 its reverse (34531221331), we get a palindrome (47843434874).

The spelling of 13312213543 in words is "thirteen billion, three hundred twelve million, two hundred thirteen thousand, five hundred forty-three".