12031040 has 112 divisors (see below), whose sum is σ = 33796224. Its totient is φ = 3993600.

The previous prime is 12031039. The next prime is 12031049. The reversal of 12031040 is 4013021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (12031049) 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, 91775 + ... + 91905.

It is an arithmetic number, because the mean of its divisors is an integer number (301752).

Almost surely, 2^12031040 is an apocalyptic number.

12031040 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 12031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16898112).

12031040 is an abundant number, since it is smaller than the sum of its proper divisors (21765184).

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

12031040 is a wasteful number, since it uses less digits than its factorization.

12031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12031040 is about 3468.5789597471. The cubic root of 12031040 is about 229.1400781641.

Adding to 12031040 its reverse (4013021), we get a palindrome (16044061).

The spelling of 12031040 in words is "twelve million, thirty-one thousand, forty".