12731167 has 4 divisors (see below), whose sum is σ = 13284720. Its totient is φ = 12177616.

The previous prime is 12731161. The next prime is 12731179. The reversal of 12731167 is 76113721.

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

It is a cyclic number.

It is not a de Polignac number, because 12731167 - 2⁷ = 12731039 is a prime.

It is a super-2 number, since 2×12731167² = 324165226363778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731161) 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, 276742 + ... + 276787.

It is an arithmetic number, because the mean of its divisors is an integer number (3321180).

Almost surely, 2^12731167 is an apocalyptic number.

12731167 is a deficient number, since it is larger than the sum of its proper divisors (553553).

12731167 is an equidigital number, since it uses as much as digits as its factorization.

12731167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553552.

The product of its digits is 1764, while the sum is 28.

The square root of 12731167 is about 3568.0760922379. The cubic root of 12731167 is about 233.5013549436.

Adding to 12731167 its reverse (76113721), we get a palindrome (88844888).

The spelling of 12731167 in words is "twelve million, seven hundred thirty-one thousand, one hundred sixty-seven".