21314243242303 has 32 divisors (see below), whose sum is σ = 24330061627200. Its totient is φ = 18493577625600.

The previous prime is 21314243242291. The next prime is 21314243242319. The reversal of 21314243242303 is 30324234241312.

It is a de Polignac number, because none of the positive numbers 2^k-21314243242303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314243242363) 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, 115544383 + ... + 115728703.

It is an arithmetic number, because the mean of its divisors is an integer number (760314425850).

Almost surely, 2^{21314243242303} is an apocalyptic number.

21314243242303 is a deficient number, since it is larger than the sum of its proper divisors (3015818384897).

21314243242303 is a wasteful number, since it uses less digits than its factorization.

21314243242303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188523.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 21314243242303 its reverse (30324234241312), we get a palindrome (51638477483615).

Subtracting 21314243242303 from its reverse (30324234241312), we obtain a palindrome (9009990999009).

The spelling of 21314243242303 in words is "twenty-one trillion, three hundred fourteen billion, two hundred forty-three million, two hundred forty-two thousand, three hundred three".