20332321313 has 4 divisors (see below), whose sum is σ = 20336625540. Its totient is φ = 20328017088.

The previous prime is 20332321291. The next prime is 20332321349. The reversal of 20332321313 is 31312323302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8988367249 + 11343954064 = 94807^2 + 106508^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332321313 - 2¹⁶ = 20332255777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20332321613) 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, 2145020 + ... + 2154477.

It is an arithmetic number, because the mean of its divisors is an integer number (5084156385).

Almost surely, 2^20332321313 is an apocalyptic number.

It is an amenable number.

20332321313 is a deficient number, since it is larger than the sum of its proper divisors (4304227).

20332321313 is an equidigital number, since it uses as much as digits as its factorization.

20332321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304226.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20332321313 its reverse (31312323302), we get a palindrome (51644644615).

The spelling of 20332321313 in words is "twenty billion, three hundred thirty-two million, three hundred twenty-one thousand, three hundred thirteen".