243043340343 has 32 divisors (see below), whose sum is σ = 357627359232. Its totient is φ = 146145600000.

The previous prime is 243043340339. The next prime is 243043340387. The reversal of 243043340343 is 343043340342.

It is not a de Polignac number, because 243043340343 - 2² = 243043340339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243043320343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 583408 + ... + 909093.

It is an arithmetic number, because the mean of its divisors is an integer number (11175854976).

Almost surely, 2^243043340343 is an apocalyptic number.

243043340343 is a deficient number, since it is larger than the sum of its proper divisors (114584018889).

243043340343 is a wasteful number, since it uses less digits than its factorization.

243043340343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492655.

The product of its (nonzero) digits is 124416, while the sum is 33.

Adding to 243043340343 its reverse (343043340342), we get a palindrome (586086680685).

Subtracting 243043340343 from its reverse (343043340342), we obtain a palindrome (99999999999).

The spelling of 243043340343 in words is "two hundred forty-three billion, forty-three million, three hundred forty thousand, three hundred forty-three".