13543243 has 8 divisors (see below), whose sum is σ = 15855840. Its totient is φ = 11325120.

The previous prime is 13543223. The next prime is 13543247. The reversal of 13543243 is 34234531.

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 13543243 - 2⁹ = 13542731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13543247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23308 + ... + 23881.

It is an arithmetic number, because the mean of its divisors is an integer number (1981980).

Almost surely, 2^13543243 is an apocalyptic number.

13543243 is a deficient number, since it is larger than the sum of its proper divisors (2312597).

13543243 is an equidigital number, since it uses as much as digits as its factorization.

13543243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47237.

The product of its digits is 4320, while the sum is 25.

The square root of 13543243 is about 3680.1145362611. The cubic root of 13543243 is about 238.3641237979.

Adding to 13543243 its reverse (34234531), we get a palindrome (47777774).

The spelling of 13543243 in words is "thirteen million, five hundred forty-three thousand, two hundred forty-three".