12466531 has 24 divisors (see below), whose sum is σ = 16046640. Its totient is φ = 9576000.

The previous prime is 12466511. The next prime is 12466541. The reversal of 12466531 is 13566421.

It is not a de Polignac number, because 12466531 - 2¹¹ = 12464483 is a prime.

It is a super-2 number, since 2×12466531² = 310828790347922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12466531.

It is not an unprimeable number, because it can be changed into a prime (12466511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54325 + ... + 54553.

It is an arithmetic number, because the mean of its divisors is an integer number (668610).

Almost surely, 2^12466531 is an apocalyptic number.

12466531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12466531 is a deficient number, since it is larger than the sum of its proper divisors (3580109).

12466531 is a wasteful number, since it uses less digits than its factorization.

12466531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 348 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 12466531 is about 3530.7975019817. The cubic root of 12466531 is about 231.8721240892.

It can be divided in two parts, 1246 and 6531, that added together give a palindrome (7777).

The spelling of 12466531 in words is "twelve million, four hundred sixty-six thousand, five hundred thirty-one".