21331113323 has 8 divisors (see below), whose sum is σ = 22973110608. Its totient is φ = 19689279264.

The previous prime is 21331113317. The next prime is 21331113367. The reversal of 21331113323 is 32331113312.

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 21331113323 - 2⁶ = 21331113259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21331113623) 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, 444161 + ... + 489837.

It is an arithmetic number, because the mean of its divisors is an integer number (2871638826).

Almost surely, 2^21331113323 is an apocalyptic number.

21331113323 is a deficient number, since it is larger than the sum of its proper divisors (1641997285).

21331113323 is a wasteful number, since it uses less digits than its factorization.

21331113323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81613.

The product of its digits is 972, while the sum is 23.

Adding to 21331113323 its reverse (32331113312), we get a palindrome (53662226635).

The spelling of 21331113323 in words is "twenty-one billion, three hundred thirty-one million, one hundred thirteen thousand, three hundred twenty-three".