20080318232813 has 8 divisors (see below), whose sum is σ = 20670111673848. Its totient is φ = 19498336625664.

The previous prime is 20080318232801. The next prime is 20080318232837. The reversal of 20080318232813 is 31823281308002.

It can be written as a sum of positive squares in 4 ways, for example, as 10658383619524 + 9421934613289 = 3264718^2 + 3069517^2 .

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 20080318232813 - 2¹⁰ = 20080318231789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20080318232113) 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, 1952953256 + ... + 1952963537.

It is an arithmetic number, because the mean of its divisors is an integer number (2583763959231).

Almost surely, 2^{20080318232813} is an apocalyptic number.

It is an amenable number.

20080318232813 is a deficient number, since it is larger than the sum of its proper divisors (589793441035).

20080318232813 is an equidigital number, since it uses as much as digits as its factorization.

20080318232813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3905916943.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 20080318232813 in words is "twenty trillion, eighty billion, three hundred eighteen million, two hundred thirty-two thousand, eight hundred thirteen".