20323332313 has 4 divisors (see below), whose sum is σ = 20325940020. Its totient is φ = 20320724608.

The previous prime is 20323332299. The next prime is 20323332319. The reversal of 20323332313 is 31323332302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31323332302 = 2 ⋅15661666151.

It can be written as a sum of positive squares in 2 ways, for example, as 5945643664 + 14377688649 = 77108^2 + 119907^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323332313 - 2⁹ = 20323331801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20323332319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292128 + ... + 1307761.

It is an arithmetic number, because the mean of its divisors is an integer number (5081485005).

Almost surely, 2^20323332313 is an apocalyptic number.

It is an amenable number.

20323332313 is a deficient number, since it is larger than the sum of its proper divisors (2607707).

20323332313 is an equidigital number, since it uses as much as digits as its factorization.

20323332313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607706.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 20323332313 its reverse (31323332302), we get a palindrome (51646664615).

The spelling of 20323332313 in words is "twenty billion, three hundred twenty-three million, three hundred thirty-two thousand, three hundred thirteen".