21313230323 has 8 divisors (see below), whose sum is σ = 26572339200. Its totient is φ = 16607711880.

The previous prime is 21313230283. The next prime is 21313230349. The reversal of 21313230323 is 32303231312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21313230323 - 2⁸ = 21313230067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21313230823) 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, 138397523 + ... + 138397676.

It is an arithmetic number, because the mean of its divisors is an integer number (3321542400).

Almost surely, 2^21313230323 is an apocalyptic number.

21313230323 is a deficient number, since it is larger than the sum of its proper divisors (5259108877).

21313230323 is a wasteful number, since it uses less digits than its factorization.

21313230323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276795217.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21313230323 its reverse (32303231312), we get a palindrome (53616461635).

The spelling of 21313230323 in words is "twenty-one billion, three hundred thirteen million, two hundred thirty thousand, three hundred twenty-three".