21411301323 has 16 divisors (see below), whose sum is σ = 28643696640. Its totient is φ = 14226609024.

The previous prime is 21411301319. The next prime is 21411301333. The reversal of 21411301323 is 32310311412.

It is not a de Polignac number, because 21411301323 - 2² = 21411301319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21411301323.

It is not an unprimeable number, because it can be changed into a prime (21411301333) 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, 1785315 + ... + 1797267.

It is an arithmetic number, because the mean of its divisors is an integer number (1790231040).

Almost surely, 2^21411301323 is an apocalyptic number.

21411301323 is a deficient number, since it is larger than the sum of its proper divisors (7232395317).

21411301323 is a wasteful number, since it uses less digits than its factorization.

21411301323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13898.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21411301323 its reverse (32310311412), we get a palindrome (53721612735).

The spelling of 21411301323 in words is "twenty-one billion, four hundred eleven million, three hundred one thousand, three hundred twenty-three".