27312317 has 2 divisors, whose sum is σ = 27312318. Its totient is φ = 27312316.

The previous prime is 27312301. The next prime is 27312347. The reversal of 27312317 is 71321372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19589476 + 7722841 = 4426^2 + 2779^2 .

It is a cyclic number.

It is not a de Polignac number, because 27312317 - 2⁴ = 27312301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27312347) 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, 13656158 + 13656159.

It is an arithmetic number, because the mean of its divisors is an integer number (13656159).

Almost surely, 2^27312317 is an apocalyptic number.

It is an amenable number.

27312317 is a deficient number, since it is larger than the sum of its proper divisors (1).

27312317 is an equidigital number, since it uses as much as digits as its factorization.

27312317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 26.

The square root of 27312317 is about 5226.1187319080. The cubic root of 27312317 is about 301.1522979940.

Adding to 27312317 its reverse (71321372), we get a palindrome (98633689).

The spelling of 27312317 in words is "twenty-seven million, three hundred twelve thousand, three hundred seventeen".