2013131111020 has 12 divisors (see below), whose sum is σ = 4227575333184. Its totient is φ = 805252444400.

The previous prime is 2013131110999. The next prime is 2013131111041. The reversal of 2013131111020 is 201111313102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2013131110999) and next prime (2013131111041).

It is a junction number, because it is equal to n+sod(n) for n = 2013131110985 and 2013131111003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50328277756 + ... + 50328277795.

It is an arithmetic number, because the mean of its divisors is an integer number (352297944432).

Almost surely, 2^{2013131111020} is an apocalyptic number.

2013131111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013131111020 is an abundant number, since it is smaller than the sum of its proper divisors (2214444222164).

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

2013131111020 is a wasteful number, since it uses less digits than its factorization.

2013131111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100656555560 (or 100656555558 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 2013131111020 its reverse (201111313102), we get a palindrome (2214242424122).

The spelling of 2013131111020 in words is "two trillion, thirteen billion, one hundred thirty-one million, one hundred eleven thousand, twenty".