243317713343 has 4 divisors (see below), whose sum is σ = 243321229080. Its totient is φ = 243314197608.

The previous prime is 243317713313. The next prime is 243317713351. The reversal of 243317713343 is 343317713342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243317713343 - 2¹² = 243317709247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243317713343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243317713313) 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, 1651928 + ... + 1793181.

It is an arithmetic number, because the mean of its divisors is an integer number (60830307270).

Almost surely, 2^243317713343 is an apocalyptic number.

243317713343 is a deficient number, since it is larger than the sum of its proper divisors (3515737).

243317713343 is an equidigital number, since it uses as much as digits as its factorization.

243317713343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515736.

The product of its digits is 381024, while the sum is 41.

Subtracting 243317713343 from its reverse (343317713342), we obtain a palindrome (99999999999).

The spelling of 243317713343 in words is "two hundred forty-three billion, three hundred seventeen million, seven hundred thirteen thousand, three hundred forty-three".