12320165 has 16 divisors (see below), whose sum is σ = 17369856. Its totient is φ = 8270400.

The previous prime is 12320159. The next prime is 12320167. The reversal of 12320165 is 56102321.

It is not a de Polignac number, because 12320165 - 2¹⁶ = 12254629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320167) 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 in 15 ways as a sum of consecutive naturals, for example, 7901 + ... + 9330.

It is an arithmetic number, because the mean of its divisors is an integer number (1085616).

Almost surely, 2^12320165 is an apocalyptic number.

It is an amenable number.

12320165 is a deficient number, since it is larger than the sum of its proper divisors (5049691).

12320165 is a wasteful number, since it uses less digits than its factorization.

12320165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17260.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12320165 is about 3510.0092592470. The cubic root of 12320165 is about 230.9611011254.

Adding to 12320165 its reverse (56102321), we get a palindrome (68422486).

The spelling of 12320165 in words is "twelve million, three hundred twenty thousand, one hundred sixty-five".