12313681 has 4 divisors (see below), whose sum is σ = 12328000. Its totient is φ = 12299364.

The previous prime is 12313673. The next prime is 12313703. The reversal of 12313681 is 18631321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18631321 = 2309 ⋅8069.

It is a cyclic number.

It is not a de Polignac number, because 12313681 - 2³ = 12313673 is a prime.

It is a super-2 number, since 2×12313681² = 303253479539522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12313181) 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 3 ways as a sum of consecutive naturals, for example, 5781 + ... + 7618.

It is an arithmetic number, because the mean of its divisors is an integer number (3082000).

Almost surely, 2^12313681 is an apocalyptic number.

It is an amenable number.

12313681 is a deficient number, since it is larger than the sum of its proper divisors (14319).

12313681 is an equidigital number, since it uses as much as digits as its factorization.

12313681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14318.

The product of its digits is 864, while the sum is 25.

The square root of 12313681 is about 3509.0854934014. The cubic root of 12313681 is about 230.9205763821.

The spelling of 12313681 in words is "twelve million, three hundred thirteen thousand, six hundred eighty-one".