12031400 has 48 divisors (see below), whose sum is σ = 28644000. Its totient is φ = 4697280.

The previous prime is 12031387. The next prime is 12031417. The reversal of 12031400 is 413021.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7901 + ... + 9299.

It is an arithmetic number, because the mean of its divisors is an integer number (596750).

Almost surely, 2^12031400 is an apocalyptic number.

12031400 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 12031400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14322000).

12031400 is an abundant number, since it is smaller than the sum of its proper divisors (16612600).

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

12031400 is a wasteful number, since it uses less digits than its factorization.

12031400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1449 counting only the distinct ones).

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

The square root of 12031400 is about 3468.6308538096. The cubic root of 12031400 is about 229.1423636303.

Adding to 12031400 its reverse (413021), we get a palindrome (12444421).

The spelling of 12031400 in words is "twelve million, thirty-one thousand, four hundred".