12311344100 has 72 divisors (see below), whose sum is σ = 29266876800. Its totient is φ = 4458025600.

The previous prime is 12311344079. The next prime is 12311344117. The reversal of 12311344100 is 144311321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239486 + ... + 286314.

It is an arithmetic number, because the mean of its divisors is an integer number (406484400).

Almost surely, 2^12311344100 is an apocalyptic number.

12311344100 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 12311344100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14633438400).

12311344100 is an abundant number, since it is smaller than the sum of its proper divisors (16955532700).

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

12311344100 is a wasteful number, since it uses less digits than its factorization.

12311344100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47093 (or 47086 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12311344100 its reverse (144311321), we get a palindrome (12455655421).

The spelling of 12311344100 in words is "twelve billion, three hundred eleven million, three hundred forty-four thousand, one hundred".