13020323112 has 48 divisors (see below), whose sum is σ = 35605758240. Its totient is φ = 4297968288.

The previous prime is 13020323101. The next prime is 13020323119. The reversal of 13020323112 is 21132302031.

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

It is not an unprimeable number, because it can be changed into a prime (13020323119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 870438 + ... + 885269.

It is an arithmetic number, because the mean of its divisors is an integer number (741786630).

Almost surely, 2^13020323112 is an apocalyptic number.

13020323112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13020323112 is an abundant number, since it is smaller than the sum of its proper divisors (22585435128).

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

13020323112 is a wasteful number, since it uses less digits than its factorization.

13020323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755822 (or 1755815 counting only the distinct ones).

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

Adding to 13020323112 its reverse (21132302031), we get a palindrome (34152625143).

The spelling of 13020323112 in words is "thirteen billion, twenty million, three hundred twenty-three thousand, one hundred twelve".