20331201232313 has 8 divisors (see below), whose sum is σ = 20714876945928. Its totient is φ = 19947528042624.

The previous prime is 20331201232301. The next prime is 20331201232319. The reversal of 20331201232313 is 31323210213302.

It can be written as a sum of positive squares in 4 ways, for example, as 808474319104 + 19522726913209 = 899152^2 + 4418453^2 .

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 20331201232313 - 2¹⁶ = 20331201166777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331201232319) 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, 26683631 + ... + 27434987.

It is an arithmetic number, because the mean of its divisors is an integer number (2589359618241).

Almost surely, 2^{20331201232313} is an apocalyptic number.

It is an amenable number.

20331201232313 is a deficient number, since it is larger than the sum of its proper divisors (383675713615).

20331201232313 is an equidigital number, since it uses as much as digits as its factorization.

20331201232313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261963.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20331201232313 its reverse (31323210213302), we get a palindrome (51654411445615).

The spelling of 20331201232313 in words is "twenty trillion, three hundred thirty-one billion, two hundred one million, two hundred thirty-two thousand, three hundred thirteen".