21323230230 has 16 divisors (see below), whose sum is σ = 51175752624. Its totient is φ = 5686194720.

The previous prime is 21323230207. The next prime is 21323230231. The reversal of 21323230230 is 3203232312.

It is a junction number, because it is equal to n+sod(n) for n = 21323230197 and 21323230206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323230231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355387141 + ... + 355387200.

It is an arithmetic number, because the mean of its divisors is an integer number (3198484539).

Almost surely, 2^21323230230 is an apocalyptic number.

21323230230 is an abundant number, since it is smaller than the sum of its proper divisors (29852522394).

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

21323230230 is a wasteful number, since it uses less digits than its factorization.

21323230230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710774351.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21323230230 its reverse (3203232312), we get a palindrome (24526462542).

The spelling of 21323230230 in words is "twenty-one billion, three hundred twenty-three million, two hundred thirty thousand, two hundred thirty".