12031104 has 128 divisors (see below), whose sum is σ = 35985600. Its totient is φ = 3538944.

The previous prime is 12031079. The next prime is 12031111. The reversal of 12031104 is 40113021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12031104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123984 + ... + 124080.

Almost surely, 2^12031104 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 12031104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17992800).

12031104 is an abundant number, since it is smaller than the sum of its proper divisors (23954496).

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

12031104 is a wasteful number, since it uses less digits than its factorization.

12031104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12031104 is about 3468.5881854149. The cubic root of 12031104 is about 229.1404844725.

Adding to 12031104 its reverse (40113021), we get a palindrome (52144125).

The spelling of 12031104 in words is "twelve million, thirty-one thousand, one hundred four".