12312681 has 8 divisors (see below), whose sum is σ = 16435680. Its totient is φ = 8199072.

The previous prime is 12312661. The next prime is 12312683. The reversal of 12312681 is 18621321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12312681 - 2⁵ = 12312649 is a prime.

It is a super-2 number, since 2×12312681² = 303204226815522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12312683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (2054460).

Almost surely, 2^12312681 is an apocalyptic number.

It is an amenable number.

12312681 is a deficient number, since it is larger than the sum of its proper divisors (4122999).

12312681 is a wasteful number, since it uses less digits than its factorization.

12312681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695.

The product of its digits is 576, while the sum is 24.

The square root of 12312681 is about 3508.9430032419. The cubic root of 12312681 is about 230.9143251556.

The spelling of 12312681 in words is "twelve million, three hundred twelve thousand, six hundred eighty-one".