20113131203102 has 64 divisors (see below), whose sum is σ = 35664998561280. Its totient is φ = 8330051664000.

The previous prime is 20113131203089. The next prime is 20113131203149. The reversal of 20113131203102 is 20130213131102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9352577 + ... + 11300307.

It is an arithmetic number, because the mean of its divisors is an integer number (557265602520).

Almost surely, 2^{20113131203102} is an apocalyptic number.

20113131203102 is a deficient number, since it is larger than the sum of its proper divisors (15551867358178).

20113131203102 is a wasteful number, since it uses less digits than its factorization.

20113131203102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948017.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20113131203102 its reverse (20130213131102), we get a palindrome (40243344334204).

The spelling of 20113131203102 in words is "twenty trillion, one hundred thirteen billion, one hundred thirty-one million, two hundred three thousand, one hundred two".