12313661 has 8 divisors (see below), whose sum is σ = 13488120. Its totient is φ = 11189248.

The previous prime is 12313657. The next prime is 12313663. The reversal of 12313661 is 16631321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 624100 + 11689561 = 790^2 + 3419^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12313661 - 2² = 12313657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11996 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (1686015).

Almost surely, 2^12313661 is an apocalyptic number.

It is an amenable number.

12313661 is a deficient number, since it is larger than the sum of its proper divisors (1174459).

12313661 is a wasteful number, since it uses less digits than its factorization.

12313661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25023.

The product of its digits is 648, while the sum is 23.

The square root of 12313661 is about 3509.0826436549. The cubic root of 12313661 is about 230.9204513609.

Adding to 12313661 its reverse (16631321), we get a palindrome (28944982).

The spelling of 12313661 in words is "twelve million, three hundred thirteen thousand, six hundred sixty-one".