20113100131020 has 96 divisors (see below), whose sum is σ = 61939131383808. Its totient is φ = 4845578287872.

The previous prime is 20113100130979. The next prime is 20113100131021. The reversal of 20113100131020 is 2013100131102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20113100131021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274282764 + ... + 274356083.

It is an arithmetic number, because the mean of its divisors is an integer number (645199285248).

Almost surely, 2^{20113100131020} is an apocalyptic number.

20113100131020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113100131020 is an abundant number, since it is smaller than the sum of its proper divisors (41826031252788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20113100131020 is a wasteful number, since it uses less digits than its factorization.

20113100131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548638919 (or 548638917 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20113100131020 its reverse (2013100131102), we get a palindrome (22126200262122).

The spelling of 20113100131020 in words is "twenty trillion, one hundred thirteen billion, one hundred million, one hundred thirty-one thousand, twenty".