243043340341 has 4 divisors (see below), whose sum is σ = 246119838400. Its totient is φ = 239966842284.

The previous prime is 243043340339. The next prime is 243043340387. The reversal of 243043340341 is 143043340342.

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 not a de Polignac number, because 243043340341 - 2¹ = 243043340339 is a prime.

It is a super-2 number, since 2×243043340341² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243043346341) 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, 1538248911 + ... + 1538249068.

It is an arithmetic number, because the mean of its divisors is an integer number (61529959600).

Almost surely, 2^243043340341 is an apocalyptic number.

It is an amenable number.

243043340341 is a deficient number, since it is larger than the sum of its proper divisors (3076498059).

243043340341 is an equidigital number, since it uses as much as digits as its factorization.

243043340341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076498058.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 243043340341 its reverse (143043340342), we get a palindrome (386086680683).

Subtracting from 243043340341 its reverse (143043340342), we obtain a palindrome (99999999999).

The spelling of 243043340341 in words is "two hundred forty-three billion, forty-three million, three hundred forty thousand, three hundred forty-one".