13003031020 has 144 divisors (see below), whose sum is σ = 32965380000. Its totient is φ = 4290650112.

The previous prime is 13003031011. The next prime is 13003031021. The reversal of 13003031020 is 2013030031.

It is not an unprimeable number, because it can be changed into a prime (13003031021) 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, 12760071 + ... + 12761089.

It is an arithmetic number, because the mean of its divisors is an integer number (228926250).

Almost surely, 2^13003031020 is an apocalyptic number.

13003031020 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 13003031020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16482690000).

13003031020 is an abundant number, since it is smaller than the sum of its proper divisors (19962348980).

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

13003031020 is a wasteful number, since it uses less digits than its factorization.

13003031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 13003031020 its reverse (2013030031), we get a palindrome (15016061051).

The spelling of 13003031020 in words is "thirteen billion, three million, thirty-one thousand, twenty".