12813127 has 4 divisors (see below), whose sum is σ = 12820696. Its totient is φ = 12805560.

The previous prime is 12813109. The next prime is 12813131. The reversal of 12813127 is 72131821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12813127 - 2¹¹ = 12811079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52 + ... + 5062.

It is an arithmetic number, because the mean of its divisors is an integer number (3205174).

Almost surely, 2^12813127 is an apocalyptic number.

12813127 is a deficient number, since it is larger than the sum of its proper divisors (7569).

12813127 is an equidigital number, since it uses as much as digits as its factorization.

12813127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7568.

The product of its digits is 672, while the sum is 25.

The square root of 12813127 is about 3579.5428479067. The cubic root of 12813127 is about 234.0013575298.

Adding to 12813127 its reverse (72131821), we get a palindrome (84944948).

The spelling of 12813127 in words is "twelve million, eight hundred thirteen thousand, one hundred twenty-seven".