12313305 has 12 divisors (see below), whose sum is σ = 21343140. Its totient is φ = 6567072.

The previous prime is 12313297. The next prime is 12313309. The reversal of 12313305 is 50331321.

It can be written as a sum of positive squares in 2 ways, for example, as 9659664 + 2653641 = 3108^2 + 1629^2 .

It is not a de Polignac number, because 12313305 - 2³ = 12313297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12313309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136770 + ... + 136859.

It is an arithmetic number, because the mean of its divisors is an integer number (1778595).

Almost surely, 2^12313305 is an apocalyptic number.

12313305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12313305 is a deficient number, since it is larger than the sum of its proper divisors (9029835).

12313305 is a wasteful number, since it uses less digits than its factorization.

12313305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273640 (or 273637 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 12313305 is about 3509.0319177802. The cubic root of 12313305 is about 230.9182259607.

Adding to 12313305 its reverse (50331321), we get a palindrome (62644626).

The spelling of 12313305 in words is "twelve million, three hundred thirteen thousand, three hundred five".