13304443231 has 4 divisors (see below), whose sum is σ = 13486695952. Its totient is φ = 13122190512.

The previous prime is 13304443211. The next prime is 13304443249. The reversal of 13304443231 is 13234440331.

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 13304443231 - 2⁵ = 13304443199 is a prime.

It is a super-2 number, since 2×13304443231² (a number of 21 digits) contains 22 as substring.

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 13304443231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13304443211) 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, 91126251 + ... + 91126396.

It is an arithmetic number, because the mean of its divisors is an integer number (3371673988).

Almost surely, 2^13304443231 is an apocalyptic number.

13304443231 is a deficient number, since it is larger than the sum of its proper divisors (182252721).

13304443231 is an equidigital number, since it uses as much as digits as its factorization.

13304443231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182252720.

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

Adding to 13304443231 its reverse (13234440331), we get a palindrome (26538883562).

The spelling of 13304443231 in words is "thirteen billion, three hundred four million, four hundred forty-three thousand, two hundred thirty-one".