243343421241 has 4 divisors (see below), whose sum is σ = 324457894992. Its totient is φ = 162228947492.

The previous prime is 243343421213. The next prime is 243343421261. The reversal of 243343421241 is 142124343342.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243343421241 is a prime.

It is a super-2 number, since 2×243343421241² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243343421201) 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, 40557236871 + ... + 40557236876.

It is an arithmetic number, because the mean of its divisors is an integer number (81114473748).

Almost surely, 2^243343421241 is an apocalyptic number.

It is an amenable number.

243343421241 is a deficient number, since it is larger than the sum of its proper divisors (81114473751).

243343421241 is an equidigital number, since it uses as much as digits as its factorization.

243343421241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81114473750.

The product of its digits is 55296, while the sum is 33.

Adding to 243343421241 its reverse (142124343342), we get a palindrome (385467764583).

The spelling of 243343421241 in words is "two hundred forty-three billion, three hundred forty-three million, four hundred twenty-one thousand, two hundred forty-one".