12318473 has 2 divisors, whose sum is σ = 12318474. Its totient is φ = 12318472.

The previous prime is 12318461. The next prime is 12318487. The reversal of 12318473 is 37481321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8832784 + 3485689 = 2972^2 + 1867^2 .

It is a cyclic number.

It is not a de Polignac number, because 12318473 - 2¹⁴ = 12302089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12318413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159236 + 6159237.

It is an arithmetic number, because the mean of its divisors is an integer number (6159237).

Almost surely, 2^12318473 is an apocalyptic number.

It is an amenable number.

12318473 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318473 is an equidigital number, since it uses as much as digits as its factorization.

12318473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 12318473 is about 3509.7682259659. The cubic root of 12318473 is about 230.9505275638.

Adding to 12318473 its reverse (37481321), we get a palindrome (49799794).

The spelling of 12318473 in words is "twelve million, three hundred eighteen thousand, four hundred seventy-three".