13023113220 has 144 divisors (see below), whose sum is σ = 42757478400. Its totient is φ = 3189466368.

The previous prime is 13023113219. The next prime is 13023113231. The reversal of 13023113220 is 2231132031.

13023113220 is a `hidden beast` number, since 1 + 30 + 2 + 311 + 322 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13023113193 and 13023113202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 451677 + ... + 479643.

Almost surely, 2^13023113220 is an apocalyptic number.

13023113220 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 13023113220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21378739200).

13023113220 is an abundant number, since it is smaller than the sum of its proper divisors (29734365180).

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

13023113220 is a wasteful number, since it uses less digits than its factorization.

13023113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28194 (or 28189 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13023113220 its reverse (2231132031), we get a palindrome (15254245251).

The spelling of 13023113220 in words is "thirteen billion, twenty-three million, one hundred thirteen thousand, two hundred twenty".