165312316 has 48 divisors (see below), whose sum is σ = 330107904. Its totient is φ = 71856576.

The previous prime is 165312311. The next prime is 165312341. The reversal of 165312316 is 613213561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165312311) 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, 79101 + ... + 81163.

It is an arithmetic number, because the mean of its divisors is an integer number (6877248).

Almost surely, 2^165312316 is an apocalyptic number.

It is an amenable number.

165312316 is a deficient number, since it is larger than the sum of its proper divisors (164795588).

165312316 is a wasteful number, since it uses less digits than its factorization.

165312316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2168 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 165312316 is about 12857.3837152043. The cubic root of 165312316 is about 548.8264962898.

Adding to 165312316 its reverse (613213561), we get a palindrome (778525877).

It can be divided in two parts, 165 and 312316, that added together give a square (312481 = 559²).

The spelling of 165312316 in words is "one hundred sixty-five million, three hundred twelve thousand, three hundred sixteen".