12318349 has 2 divisors, whose sum is σ = 12318350. Its totient is φ = 12318348.

The previous prime is 12318347. The next prime is 12318379. The reversal of 12318349 is 94381321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6340324 + 5978025 = 2518^2 + 2445^2 .

It is a cyclic number.

It is not a de Polignac number, because 12318349 - 2¹ = 12318347 is a prime.

Together with 12318347, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12318349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12318343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159174 + 6159175.

It is an arithmetic number, because the mean of its divisors is an integer number (6159175).

Almost surely, 2^12318349 is an apocalyptic number.

It is an amenable number.

12318349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318349 is an equidigital number, since it uses as much as digits as its factorization.

12318349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 12318349 is about 3509.7505609373. The cubic root of 12318349 is about 230.9497526311.

The spelling of 12318349 in words is "twelve million, three hundred eighteen thousand, three hundred forty-nine".