13231304443 has 4 divisors (see below), whose sum is σ = 15121490800. Its totient is φ = 11341118088.

The previous prime is 13231304431. The next prime is 13231304453. The reversal of 13231304443 is 34440313231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13231304443 - 2³³ = 4641369851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231304453) 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, 945093168 + ... + 945093181.

It is an arithmetic number, because the mean of its divisors is an integer number (3780372700).

Almost surely, 2^13231304443 is an apocalyptic number.

13231304443 is a deficient number, since it is larger than the sum of its proper divisors (1890186357).

13231304443 is an equidigital number, since it uses as much as digits as its factorization.

13231304443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890186356.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 13231304443 its reverse (34440313231), we get a palindrome (47671617674).

The spelling of 13231304443 in words is "thirteen billion, two hundred thirty-one million, three hundred four thousand, four hundred forty-three".