12531266 has 8 divisors (see below), whose sum is σ = 20505744. Its totient is φ = 5696020.

The previous prime is 12531263. The next prime is 12531283. The reversal of 12531266 is 66213521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12531263) 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 3 ways as a sum of consecutive naturals, for example, 284780 + ... + 284823.

It is an arithmetic number, because the mean of its divisors is an integer number (2563218).

Almost surely, 2^12531266 is an apocalyptic number.

12531266 is a deficient number, since it is larger than the sum of its proper divisors (7974478).

12531266 is a wasteful number, since it uses less digits than its factorization.

12531266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569616.

The product of its digits is 2160, while the sum is 26.

The square root of 12531266 is about 3539.9528245444. The cubic root of 12531266 is about 232.2727791284.

Adding to 12531266 its reverse (66213521), we get a palindrome (78744787).

The spelling of 12531266 in words is "twelve million, five hundred thirty-one thousand, two hundred sixty-six".