21244024323 has 6 divisors (see below), whose sum is σ = 30685812924. Its totient is φ = 14162682876.

The previous prime is 21244024301. The next prime is 21244024337. The reversal of 21244024323 is 32342044212.

21244024323 is a `hidden beast` number, since 212 + 4 + 402 + 43 + 2 + 3 = 666.

It is not a de Polignac number, because 21244024323 - 2⁶ = 21244024259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21244022323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1180223565 + ... + 1180223582.

It is an arithmetic number, because the mean of its divisors is an integer number (5114302154).

Almost surely, 2^21244024323 is an apocalyptic number.

21244024323 is a deficient number, since it is larger than the sum of its proper divisors (9441788601).

21244024323 is a wasteful number, since it uses less digits than its factorization.

21244024323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360447153 (or 2360447150 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 21244024323 its reverse (32342044212), we get a palindrome (53586068535).

The spelling of 21244024323 in words is "twenty-one billion, two hundred forty-four million, twenty-four thousand, three hundred twenty-three".