13131320310020 has 96 divisors (see below), whose sum is σ = 31672756684800. Its totient is φ = 4522737340800.

The previous prime is 13131320310019. The next prime is 13131320310047. The reversal of 13131320310020 is 2001302313131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13131320309974 and 13131320310001.

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, 19273541 + ... + 19943219.

It is an arithmetic number, because the mean of its divisors is an integer number (329924548800).

Almost surely, 2^{13131320310020} is an apocalyptic number.

13131320310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13131320310020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15836378342400).

13131320310020 is an abundant number, since it is smaller than the sum of its proper divisors (18541436374780).

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

13131320310020 is a wasteful number, since it uses less digits than its factorization.

13131320310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674409 (or 674407 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13131320310020 its reverse (2001302313131), we get a palindrome (15132622623151).

The spelling of 13131320310020 in words is "thirteen trillion, one hundred thirty-one billion, three hundred twenty million, three hundred ten thousand, twenty".