243305342003 has 4 divisors (see below), whose sum is σ = 243412669080. Its totient is φ = 243198014928.

The previous prime is 243305341969. The next prime is 243305342041. The reversal of 243305342003 is 300243503342.

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 243305342003 - 2¹⁰ = 243305340979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243301342003) 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, 53660138 + ... + 53664671.

It is an arithmetic number, because the mean of its divisors is an integer number (60853167270).

Almost surely, 2^243305342003 is an apocalyptic number.

243305342003 is a deficient number, since it is larger than the sum of its proper divisors (107327077).

243305342003 is a wasteful number, since it uses less digits than its factorization.

243305342003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107327076.

The product of its (nonzero) digits is 25920, while the sum is 29.

Adding to 243305342003 its reverse (300243503342), we get a palindrome (543548845345).

The spelling of 243305342003 in words is "two hundred forty-three billion, three hundred five million, three hundred forty-two thousand, three".