13443133231 has 8 divisors (see below), whose sum is σ = 15527897424. Its totient is φ = 11502145920.

The previous prime is 13443133183. The next prime is 13443133243. The reversal of 13443133231 is 13233134431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13443133231 - 2²⁵ = 13409578799 is a prime.

It is a super-2 number, since 2×13443133231² (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 13443133231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13443133031) 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 7 ways as a sum of consecutive naturals, for example, 35944020 + ... + 35944393.

It is an arithmetic number, because the mean of its divisors is an integer number (1940987178).

Almost surely, 2^13443133231 is an apocalyptic number.

13443133231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13443133231 is a deficient number, since it is larger than the sum of its proper divisors (2084764193).

13443133231 is a wasteful number, since it uses less digits than its factorization.

13443133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71888441.

The product of its digits is 7776, while the sum is 28.

Adding to 13443133231 its reverse (13233134431), we get a palindrome (26676267662).

The spelling of 13443133231 in words is "thirteen billion, four hundred forty-three million, one hundred thirty-three thousand, two hundred thirty-one".