21232313323 has 8 divisors (see below), whose sum is σ = 23603167616. Its totient is φ = 18966830400.

The previous prime is 21232313317. The next prime is 21232313327. The reversal of 21232313323 is 32331323212.

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 21232313323 - 2²⁵ = 21198758891 is a prime.

It is a super-2 number, since 2×21232313323² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232313327) 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, 26342418 + ... + 26343223.

It is an arithmetic number, because the mean of its divisors is an integer number (2950395952).

Almost surely, 2^21232313323 is an apocalyptic number.

21232313323 is a deficient number, since it is larger than the sum of its proper divisors (2370854293).

21232313323 is a wasteful number, since it uses less digits than its factorization.

21232313323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52685685.

The product of its digits is 3888, while the sum is 25.

Adding to 21232313323 its reverse (32331323212), we get a palindrome (53563636535).

The spelling of 21232313323 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirteen thousand, three hundred twenty-three".