12312667 has 4 divisors (see below), whose sum is σ = 12514576. Its totient is φ = 12110760.

The previous prime is 12312661. The next prime is 12312683. The reversal of 12312667 is 76621321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76621321 = 7 ⋅10945903.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12312667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100863 + ... + 100984.

It is an arithmetic number, because the mean of its divisors is an integer number (3128644).

Almost surely, 2^12312667 is an apocalyptic number.

12312667 is a deficient number, since it is larger than the sum of its proper divisors (201909).

12312667 is an equidigital number, since it uses as much as digits as its factorization.

12312667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201908.

The product of its digits is 3024, while the sum is 28.

The square root of 12312667 is about 3508.9410083386. The cubic root of 12312667 is about 230.9142376360.

Adding to 12312667 its reverse (76621321), we get a palindrome (88933988).

The spelling of 12312667 in words is "twelve million, three hundred twelve thousand, six hundred sixty-seven".