13231243 has 4 divisors (see below), whose sum is σ = 13310640. Its totient is φ = 13151848.

The previous prime is 13231189. The next prime is 13231247. The reversal of 13231243 is 34213231.

13231243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13231243 - 2⁹ = 13230731 is a prime.

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 13231243.

It is not an unprimeable number, because it can be changed into a prime (13231247) 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, 39448 + ... + 39781.

It is an arithmetic number, because the mean of its divisors is an integer number (3327660).

Almost surely, 2^13231243 is an apocalyptic number.

13231243 is a deficient number, since it is larger than the sum of its proper divisors (79397).

13231243 is an equidigital number, since it uses as much as digits as its factorization.

13231243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79396.

The product of its digits is 432, while the sum is 19.

The square root of 13231243 is about 3637.4775600682. The cubic root of 13231243 is about 236.5194616777.

Adding to 13231243 its reverse (34213231), we get a palindrome (47444474).

It can be divided in two parts, 132312 and 43, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 13231243 in words is "thirteen million, two hundred thirty-one thousand, two hundred forty-three".