12271613 has 2 divisors, whose sum is σ = 12271614. Its totient is φ = 12271612.

The previous prime is 12271607. The next prime is 12271621. The reversal of 12271613 is 31617221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6692569 + 5579044 = 2587^2 + 2362^2 .

It is a cyclic number.

It is not a de Polignac number, because 12271613 - 2¹⁸ = 12009469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12271643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6135806 + 6135807.

It is an arithmetic number, because the mean of its divisors is an integer number (6135807).

Almost surely, 2^12271613 is an apocalyptic number.

It is an amenable number.

12271613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12271613 is an equidigital number, since it uses as much as digits as its factorization.

12271613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 12271613 is about 3503.0862107576. The cubic root of 12271613 is about 230.6573068677.

Adding to 12271613 its reverse (31617221), we get a palindrome (43888834).

The spelling of 12271613 in words is "twelve million, two hundred seventy-one thousand, six hundred thirteen".