12309371 has 2 divisors, whose sum is σ = 12309372. Its totient is φ = 12309370.

The previous prime is 12309361. The next prime is 12309379. The reversal of 12309371 is 17390321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12309371 - 2¹⁸ = 12047227 is a prime.

It is a super-2 number, since 2×12309371² = 303041228831282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12309371.

It is not a weakly prime, because it can be changed into another prime (12309379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6154685 + 6154686.

It is an arithmetic number, because the mean of its divisors is an integer number (6154686).

Almost surely, 2^12309371 is an apocalyptic number.

12309371 is a deficient number, since it is larger than the sum of its proper divisors (1).

12309371 is an equidigital number, since it uses as much as digits as its factorization.

12309371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 12309371 is about 3508.4713195350. The cubic root of 12309371 is about 230.8936311812.

Adding to 12309371 its reverse (17390321), we get a palindrome (29699692).

It can be divided in two parts, 1230 and 9371, that added together give a palindrome (10601).

The spelling of 12309371 in words is "twelve million, three hundred nine thousand, three hundred seventy-one".