12031000 has 64 divisors (see below), whose sum is σ = 28810080. Its totient is φ = 4700800.

The previous prime is 12030983. The next prime is 12031003. The reversal of 12031000 is 13021.

It is a super-2 number, since 2×12031000² = 289489922000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52887 + ... + 53113.

Almost surely, 2^12031000 is an apocalyptic number.

12031000 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 12031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14405040).

12031000 is an abundant number, since it is smaller than the sum of its proper divisors (16779080).

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

12031000 is a wasteful number, since it uses less digits than its factorization.

12031000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 12031000 is about 3468.5731936922. The cubic root of 12031000 is about 229.1398242206.

Adding to 12031000 its reverse (13021), we get a palindrome (12044021).

The spelling of 12031000 in words is "twelve million, thirty-one thousand".