21322320313 has 8 divisors (see below), whose sum is σ = 24962716800. Its totient is φ = 17830511520.

The previous prime is 21322320307. The next prime is 21322320317. The reversal of 21322320313 is 31302322312.

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 21322320313 - 2¹⁷ = 21322189241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21322320317) 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, 37146613 + ... + 37147186.

It is an arithmetic number, because the mean of its divisors is an integer number (3120339600).

Almost surely, 2^21322320313 is an apocalyptic number.

It is an amenable number.

21322320313 is a deficient number, since it is larger than the sum of its proper divisors (3640396487).

21322320313 is an equidigital number, since it uses as much as digits as its factorization.

21322320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74293847.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21322320313 its reverse (31302322312), we get a palindrome (52624642625).

The spelling of 21322320313 in words is "twenty-one billion, three hundred twenty-two million, three hundred twenty thousand, three hundred thirteen".