21423303230 has 64 divisors (see below), whose sum is σ = 45015782400. Its totient is φ = 7337689632.

The previous prime is 21423303217. The next prime is 21423303271. The reversal of 21423303230 is 3230332412.

It is a junction number, because it is equal to n+sod(n) for n = 21423303196 and 21423303205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4192337 + ... + 4197443.

It is an arithmetic number, because the mean of its divisors is an integer number (703371600).

Almost surely, 2^21423303230 is an apocalyptic number.

21423303230 is an abundant number, since it is smaller than the sum of its proper divisors (23592479170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21423303230 is a wasteful number, since it uses less digits than its factorization.

21423303230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358 (or 6344 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21423303230 its reverse (3230332412), we get a palindrome (24653635642).

The spelling of 21423303230 in words is "twenty-one billion, four hundred twenty-three million, three hundred three thousand, two hundred thirty".