21332423313 has 6 divisors (see below), whose sum is σ = 30813500354. Its totient is φ = 14221615536.

The previous prime is 21332423237. The next prime is 21332423339. The reversal of 21332423313 is 31332423312.

21332423313 is a `hidden beast` number, since 2 + 1 + 3 + 324 + 2 + 331 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21318044049 + 14379264 = 146007^2 + 3792^2 .

It is not a de Polignac number, because 21332423313 - 2¹⁶ = 21332357777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21332423383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1185134620 + ... + 1185134637.

Almost surely, 2^21332423313 is an apocalyptic number.

It is an amenable number.

21332423313 is a deficient number, since it is larger than the sum of its proper divisors (9481077041).

21332423313 is a wasteful number, since it uses less digits than its factorization.

21332423313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370269263 (or 2370269260 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

Adding to 21332423313 its reverse (31332423312), we get a palindrome (52664846625).

Subtracting 21332423313 from its reverse (31332423312), we obtain a palindrome (9999999999).

The spelling of 21332423313 in words is "twenty-one billion, three hundred thirty-two million, four hundred twenty-three thousand, three hundred thirteen".