13043343231 has 12 divisors (see below), whose sum is σ = 19831984120. Its totient is φ = 8237900880.

The previous prime is 13043343223. The next prime is 13043343251. The reversal of 13043343231 is 13234334031.

13043343231 is a `hidden beast` number, since 1 + 3 + 0 + 4 + 334 + 323 + 1 = 666.

It is not a de Polignac number, because 13043343231 - 2³ = 13043343223 is a prime.

It is a super-2 number, since 2×13043343231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13043343195 and 13043343204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13043343251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38138260 + ... + 38138601.

Almost surely, 2^13043343231 is an apocalyptic number.

13043343231 is a deficient number, since it is larger than the sum of its proper divisors (6788640889).

13043343231 is a wasteful number, since it uses less digits than its factorization.

13043343231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76276886 (or 76276883 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 13043343231 its reverse (13234334031), we get a palindrome (26277677262).

The spelling of 13043343231 in words is "thirteen billion, forty-three million, three hundred forty-three thousand, two hundred thirty-one".