21014024323 has 4 divisors (see below), whose sum is σ = 21018871720. Its totient is φ = 21009176928.

The previous prime is 21014024303. The next prime is 21014024333. The reversal of 21014024323 is 32342041012.

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 21014024323 - 2²¹ = 21011927171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21014024294 and 21014024303.

It is not an unprimeable number, because it can be changed into a prime (21014024303) 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, 2417190 + ... + 2425867.

It is an arithmetic number, because the mean of its divisors is an integer number (5254717930).

Almost surely, 2^21014024323 is an apocalyptic number.

21014024323 is a deficient number, since it is larger than the sum of its proper divisors (4847397).

21014024323 is an equidigital number, since it uses as much as digits as its factorization.

21014024323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4847396.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21014024323 its reverse (32342041012), we get a palindrome (53356065335).

The spelling of 21014024323 in words is "twenty-one billion, fourteen million, twenty-four thousand, three hundred twenty-three".