12872131 has 2 divisors, whose sum is σ = 12872132. Its totient is φ = 12872130.

The previous prime is 12872117. The next prime is 12872141. The reversal of 12872131 is 13127821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12872131 - 2⁷ = 12872003 is a prime.

It is a super-2 number, since 2×12872131² = 331383512962322, which contains 22 as substring.

It is equal to p₈₄₁₅₃₄ and since 12872131 and 841534 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 12872096 and 12872105.

It is not a weakly prime, because it can be changed into another prime (12872141) 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 as a sum of consecutive naturals, namely, 6436065 + 6436066.

It is an arithmetic number, because the mean of its divisors is an integer number (6436066).

Almost surely, 2^12872131 is an apocalyptic number.

12872131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12872131 is an equidigital number, since it uses as much as digits as its factorization.

12872131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12872131 is about 3587.7752159242. The cubic root of 12872131 is about 234.3599969300.

Adding to 12872131 its reverse (13127821), we get a palindrome (25999952).

The spelling of 12872131 in words is "twelve million, eight hundred seventy-two thousand, one hundred thirty-one".