12316257 has 6 divisors (see below), whose sum is σ = 17790162. Its totient is φ = 8210832.

The previous prime is 12316231. The next prime is 12316259. The reversal of 12316257 is 75261321.

It is a happy number.

12316257 is a `hidden beast` number, since 1 + 2 + 31 + 625 + 7 = 666.

12316257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7817616 + 4498641 = 2796^2 + 2121^2 .

It is not a de Polignac number, because 12316257 - 2¹⁵ = 12283489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12316257.

It is not an unprimeable number, because it can be changed into a prime (12316259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684228 + ... + 684245.

It is an arithmetic number, because the mean of its divisors is an integer number (2965027).

Almost surely, 2^12316257 is an apocalyptic number.

It is an amenable number.

12316257 is a deficient number, since it is larger than the sum of its proper divisors (5473905).

12316257 is a wasteful number, since it uses less digits than its factorization.

12316257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368479 (or 1368476 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 12316257 is about 3509.4525214056. The cubic root of 12316257 is about 230.9366779830.

Adding to 12316257 its reverse (75261321), we get a palindrome (87577578).

The spelling of 12316257 in words is "twelve million, three hundred sixteen thousand, two hundred fifty-seven".