12665131 has 2 divisors, whose sum is σ = 12665132. Its totient is φ = 12665130.

The previous prime is 12665123. The next prime is 12665167. The reversal of 12665131 is 13156621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12665131 - 2³ = 12665123 is a prime.

It is a super-2 number, since 2×12665131² = 320811086494322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12665096 and 12665105.

It is not a weakly prime, because it can be changed into another prime (12665531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6332565 + 6332566.

It is an arithmetic number, because the mean of its divisors is an integer number (6332566).

Almost surely, 2^12665131 is an apocalyptic number.

12665131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12665131 is an equidigital number, since it uses as much as digits as its factorization.

12665131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 12665131 is about 3558.8103349294. The cubic root of 12665131 is about 233.0969344992.

The spelling of 12665131 in words is "twelve million, six hundred sixty-five thousand, one hundred thirty-one".