12031140 has 48 divisors (see below), whose sum is σ = 36751680. Its totient is φ = 2916480.

The previous prime is 12031133. The next prime is 12031141. The reversal of 12031140 is 4113021.

It is a happy number.

12031140 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 (12).

It is not an unprimeable number, because it can be changed into a prime (12031141) 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, 8455 + ... + 9774.

It is an arithmetic number, because the mean of its divisors is an integer number (765660).

Almost surely, 2^12031140 is an apocalyptic number.

12031140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12031140 is an abundant number, since it is smaller than the sum of its proper divisors (24720540).

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

12031140 is a wasteful number, since it uses less digits than its factorization.

12031140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18252 (or 18250 counting only the distinct ones).

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

The square root of 12031140 is about 3468.5933748423. The cubic root of 12031140 is about 229.1407130204.

Adding to 12031140 its reverse (4113021), we get a palindrome (16144161).

The spelling of 12031140 in words is "twelve million, thirty-one thousand, one hundred forty".