12311808 has 144 divisors (see below), whose sum is σ = 37086336. Its totient is φ = 3604480.

The previous prime is 12311797. The next prime is 12311809. The reversal of 12311808 is 80811321.

12311808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300268 + ... + 300308.

It is an arithmetic number, because the mean of its divisors is an integer number (257544).

Almost surely, 2^12311808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12311808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18543168).

12311808 is an abundant number, since it is smaller than the sum of its proper divisors (24774528).

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

12311808 is a wasteful number, since it uses less digits than its factorization.

12311808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 12311808 is about 3508.8186046018. The cubic root of 12311808 is about 230.9088675581.

The spelling of 12311808 in words is "twelve million, three hundred eleven thousand, eight hundred eight".