12631275 has 24 divisors (see below), whose sum is σ = 23205360. Its totient is φ = 6736320.

The previous prime is 12631273. The next prime is 12631277. The reversal of 12631275 is 57213621.

It is a happy number.

12631275 is a `hidden beast` number, since 1 + 2 + 631 + 27 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (12631273) and next prime (12631277).

It is not a de Polignac number, because 12631275 - 2¹ = 12631273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12631273) 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, 8682 + ... + 10031.

It is an arithmetic number, because the mean of its divisors is an integer number (966890).

Almost surely, 2^12631275 is an apocalyptic number.

12631275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12631275 is a deficient number, since it is larger than the sum of its proper divisors (10574085).

12631275 is a wasteful number, since it uses less digits than its factorization.

12631275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18732 (or 18721 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 12631275 is about 3554.0505061127. The cubic root of 12631275 is about 232.8890468680.

Adding to 12631275 its reverse (57213621), we get a palindrome (69844896).

The spelling of 12631275 in words is "twelve million, six hundred thirty-one thousand, two hundred seventy-five".