13243442231 has 4 divisors (see below), whose sum is σ = 13245279432. Its totient is φ = 13241605032.

The previous prime is 13243442213. The next prime is 13243442243. The reversal of 13243442231 is 13224434231.

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 13243442231 - 2¹⁸ = 13243180087 is a prime.

It is a super-2 number, since 2×13243442231² (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 = 13243442194 and 13243442203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243442281) 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 3 ways as a sum of consecutive naturals, for example, 907745 + ... + 922218.

It is an arithmetic number, because the mean of its divisors is an integer number (3311319858).

Almost surely, 2^13243442231 is an apocalyptic number.

13243442231 is a deficient number, since it is larger than the sum of its proper divisors (1837201).

13243442231 is an equidigital number, since it uses as much as digits as its factorization.

13243442231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837200.

The product of its digits is 13824, while the sum is 29.

Adding to 13243442231 its reverse (13224434231), we get a palindrome (26467876462).

The spelling of 13243442231 in words is "thirteen billion, two hundred forty-three million, four hundred forty-two thousand, two hundred thirty-one".