12313313 has 4 divisors (see below), whose sum is σ = 12737940. Its totient is φ = 11888688.

The previous prime is 12313309. The next prime is 12313319. The reversal of 12313313 is 31331321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3265249 + 9048064 = 1807^2 + 3008^2 .

It is a cyclic number.

It is not a de Polignac number, because 12313313 - 2² = 12313309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12313291 and 12313300.

It is not an unprimeable number, because it can be changed into a prime (12313319) 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, 212270 + ... + 212327.

It is an arithmetic number, because the mean of its divisors is an integer number (3184485).

Almost surely, 2^12313313 is an apocalyptic number.

It is an amenable number.

12313313 is a deficient number, since it is larger than the sum of its proper divisors (424627).

12313313 is an equidigital number, since it uses as much as digits as its factorization.

12313313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424626.

The product of its digits is 162, while the sum is 17.

The square root of 12313313 is about 3509.0330576955. The cubic root of 12313313 is about 230.9182759701.

Adding to 12313313 its reverse (31331321), we get a palindrome (43644634).

The spelling of 12313313 in words is "twelve million, three hundred thirteen thousand, three hundred thirteen".