20013113013331 has 4 divisors (see below), whose sum is σ = 20021603941872. Its totient is φ = 20004622084792.

The previous prime is 20013113013263. The next prime is 20013113013347. The reversal of 20013113013331 is 13331031131002.

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

It is a cyclic number.

It is not a de Polignac number, because 20013113013331 - 2⁹ = 20013113012819 is a prime.

It is a super-2 number, since 2×20013113013331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013113613331) 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, 4245460735 + ... + 4245465448.

It is an arithmetic number, because the mean of its divisors is an integer number (5005400985468).

Almost surely, 2^{20013113013331} is an apocalyptic number.

20013113013331 is a deficient number, since it is larger than the sum of its proper divisors (8490928541).

20013113013331 is an equidigital number, since it uses as much as digits as its factorization.

20013113013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490928540.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 20013113013331 its reverse (13331031131002), we get a palindrome (33344144144333).

The spelling of 20013113013331 in words is "twenty trillion, thirteen billion, one hundred thirteen million, thirteen thousand, three hundred thirty-one".