12706131 has 4 divisors (see below), whose sum is σ = 16941512. Its totient is φ = 8470752.

The previous prime is 12706093. The next prime is 12706139. The reversal of 12706131 is 13160721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12706131 - 2⁹ = 12705619 is a prime.

It is a super-2 number, since 2×12706131² = 322891529978322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12706098 and 12706107.

It is not an unprimeable number, because it can be changed into a prime (12706139) 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, 2117686 + ... + 2117691.

It is an arithmetic number, because the mean of its divisors is an integer number (4235378).

Almost surely, 2^12706131 is an apocalyptic number.

12706131 is a deficient number, since it is larger than the sum of its proper divisors (4235381).

12706131 is an equidigital number, since it uses as much as digits as its factorization.

12706131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235380.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 12706131 is about 3564.5660324926. The cubic root of 12706131 is about 233.3481933847.

Adding to 12706131 its reverse (13160721), we get a palindrome (25866852).

The spelling of 12706131 in words is "twelve million, seven hundred six thousand, one hundred thirty-one".