12313581 has 8 divisors (see below), whose sum is σ = 18763584. Its totient is φ = 7036320.

The previous prime is 12313573. The next prime is 12313591. The reversal of 12313581 is 18531321.

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

It is not a de Polignac number, because 12313581 - 2³ = 12313573 is a prime.

It is a super-2 number, since 2×12313581² = 303248554087122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293160 + ... + 293201.

It is an arithmetic number, because the mean of its divisors is an integer number (2345448).

Almost surely, 2^12313581 is an apocalyptic number.

It is an amenable number.

12313581 is a deficient number, since it is larger than the sum of its proper divisors (6450003).

12313581 is an equidigital number, since it uses as much as digits as its factorization.

12313581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586371.

The product of its digits is 720, while the sum is 24.

The square root of 12313581 is about 3509.0712446458. The cubic root of 12313581 is about 230.9199512747.

The spelling of 12313581 in words is "twelve million, three hundred thirteen thousand, five hundred eighty-one".