13103312020 has 72 divisors (see below), whose sum is σ = 29505391776. Its totient is φ = 4886678016.

The previous prime is 13103311967. The next prime is 13103312029. The reversal of 13103312020 is 2021330131.

It is a junction number, because it is equal to n+sod(n) for n = 13103311985 and 13103312003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103312029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 607867 + ... + 629053.

It is an arithmetic number, because the mean of its divisors is an integer number (409797108).

Almost surely, 2^13103312020 is an apocalyptic number.

13103312020 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 13103312020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14752695888).

13103312020 is an abundant number, since it is smaller than the sum of its proper divisors (16402079756).

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

13103312020 is a wasteful number, since it uses less digits than its factorization.

13103312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21337 (or 21318 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13103312020 its reverse (2021330131), we get a palindrome (15124642151).

The spelling of 13103312020 in words is "thirteen billion, one hundred three million, three hundred twelve thousand, twenty".