13103002020 has 144 divisors (see below), whose sum is σ = 39008531520. Its totient is φ = 3285097728.

The previous prime is 13103002007. The next prime is 13103002021. The reversal of 13103002020 is 2020030131.

It is a happy number.

It is a super-2 number, since 2×13103002020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 13103001987 and 13103002005.

It is not an unprimeable number, because it can be changed into a prime (13103002021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1869162 + ... + 1876158.

It is an arithmetic number, because the mean of its divisors is an integer number (270892580).

Almost surely, 2^13103002020 is an apocalyptic number.

13103002020 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 13103002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19504265760).

13103002020 is an abundant number, since it is smaller than the sum of its proper divisors (25905529500).

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

13103002020 is a wasteful number, since it uses less digits than its factorization.

13103002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114 (or 7089 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 13103002020 its reverse (2020030131), we get a palindrome (15123032151).

The spelling of 13103002020 in words is "thirteen billion, one hundred three million, two thousand, twenty".