12337813 has 2 divisors, whose sum is σ = 12337814. Its totient is φ = 12337812.

The previous prime is 12337811. The next prime is 12337877. The reversal of 12337813 is 31873321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8720209 + 3617604 = 2953^2 + 1902^2 .

It is an emirp because it is prime and its reverse (31873321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12337813 - 2¹ = 12337811 is a prime.

Together with 12337811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12337811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6168906 + 6168907.

It is an arithmetic number, because the mean of its divisors is an integer number (6168907).

Almost surely, 2^12337813 is an apocalyptic number.

It is an amenable number.

12337813 is a deficient number, since it is larger than the sum of its proper divisors (1).

12337813 is an equidigital number, since it uses as much as digits as its factorization.

12337813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 12337813 is about 3512.5223130964. The cubic root of 12337813 is about 231.0713284598.

The spelling of 12337813 in words is "twelve million, three hundred thirty-seven thousand, eight hundred thirteen".