12320071 has 2 divisors, whose sum is σ = 12320072. Its totient is φ = 12320070.

The previous prime is 12320057. The next prime is 12320083. The reversal of 12320071 is 17002321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12320071 - 2¹⁷ = 12188999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12320171) 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, 6160035 + 6160036.

It is an arithmetic number, because the mean of its divisors is an integer number (6160036).

Almost surely, 2^12320071 is an apocalyptic number.

12320071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320071 is an equidigital number, since it uses as much as digits as its factorization.

12320071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 12320071 is about 3509.9958689434. The cubic root of 12320071 is about 230.9605137308.

Adding to 12320071 its reverse (17002321), we get a palindrome (29322392).

The spelling of 12320071 in words is "twelve million, three hundred twenty thousand, seventy-one".