21303241323 has 96 divisors (see below), whose sum is σ = 37727907840. Its totient is φ = 10579403520.

The previous prime is 21303241307. The next prime is 21303241361. The reversal of 21303241323 is 32314230312.

It is not a de Polignac number, because 21303241323 - 2⁴ = 21303241307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21303241293 and 21303241302.

It is not an unprimeable number, because it can be changed into a prime (21303241303) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2187058 + ... + 2196776.

It is an arithmetic number, because the mean of its divisors is an integer number (392999040).

Almost surely, 2^21303241323 is an apocalyptic number.

21303241323 is a deficient number, since it is larger than the sum of its proper divisors (16424666517).

21303241323 is a wasteful number, since it uses less digits than its factorization.

21303241323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9817 (or 9810 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21303241323 its reverse (32314230312), we get a palindrome (53617471635).

The spelling of 21303241323 in words is "twenty-one billion, three hundred three million, two hundred forty-one thousand, three hundred twenty-three".