13023123020 has 144 divisors (see below), whose sum is σ = 30793216608. Its totient is φ = 4608890880.

The previous prime is 13023123007. The next prime is 13023123023. The reversal of 13023123020 is 2032132031.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 13023123020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023123023) 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, 10970867 + ... + 10972053.

It is an arithmetic number, because the mean of its divisors is an integer number (213841782).

Almost surely, 2^13023123020 is an apocalyptic number.

13023123020 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 13023123020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15396608304).

13023123020 is an abundant number, since it is smaller than the sum of its proper divisors (17770093588).

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

13023123020 is a wasteful number, since it uses less digits than its factorization.

13023123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13023123020 its reverse (2032132031), we get a palindrome (15055255051).

The spelling of 13023123020 in words is "thirteen billion, twenty-three million, one hundred twenty-three thousand, twenty".