12031245 has 24 divisors (see below), whose sum is σ = 21366072. Its totient is φ = 6259200.

The previous prime is 12031219. The next prime is 12031247. The reversal of 12031245 is 54213021.

It can be written as a sum of positive squares in 4 ways, for example, as 1022121 + 11009124 = 1011^2 + 3318^2 .

It is not a de Polignac number, because 12031245 - 2¹² = 12027149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031247) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1416 + ... + 5105.

It is an arithmetic number, because the mean of its divisors is an integer number (890253).

Almost surely, 2^12031245 is an apocalyptic number.

12031245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12031245 is a deficient number, since it is larger than the sum of its proper divisors (9334827).

12031245 is a wasteful number, since it uses less digits than its factorization.

12031245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6573 (or 6570 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12031245 is about 3468.6085106279. The cubic root of 12031245 is about 229.1413796157.

Adding to 12031245 its reverse (54213021), we get a palindrome (66244266).

The spelling of 12031245 in words is "twelve million, thirty-one thousand, two hundred forty-five".