Adding to 243013 its reverse (310342), we get a palindrome (553355).
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 310342 = 2 ⋅155171.
It is a cyclic number.
It is a Duffinian number.
It is a nialpdrome in base 12.
It is a congruent number.
2243013 is an apocalyptic number.
243013 is the 264-th centered heptagonal number.
It is an amenable number.
243013 is an equidigital number, since it uses as much as digits as its factorization.
243013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 986.
The square root of 243013 is about 492.9634874917. The cubic root of 243013 is about 62.4036274738.
The spelling of 243013 in words is "two hundred forty-three thousand, thirteen".