243305320101 has 16 divisors (see below), whose sum is σ = 349970808384. Its totient is φ = 149781741824.

The previous prime is 243305320099. The next prime is 243305320151. The reversal of 243305320101 is 101023503342.

It is a cyclic number.

It is not a de Polignac number, because 243305320101 - 2¹ = 243305320099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243305320151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45003831 + ... + 45009236.

It is an arithmetic number, because the mean of its divisors is an integer number (21873175524).

Almost surely, 2^243305320101 is an apocalyptic number.

It is an amenable number.

243305320101 is a deficient number, since it is larger than the sum of its proper divisors (106665488283).

243305320101 is a wasteful number, since it uses less digits than its factorization.

243305320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90013140.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 243305320101 its reverse (101023503342), we get a palindrome (344328823443).

The spelling of 243305320101 in words is "two hundred forty-three billion, three hundred five million, three hundred twenty thousand, one hundred one".