165136223 has 6 divisors (see below), whose sum is σ = 192097296. Its totient is φ = 141545292.

The previous prime is 165136189. The next prime is 165136229. The reversal of 165136223 is 322631561.

It is not a de Polignac number, because 165136223 - 2¹⁰ = 165135199 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 (165136229) 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 in 5 ways as a sum of consecutive naturals, for example, 1685015 + ... + 1685112.

It is an arithmetic number, because the mean of its divisors is an integer number (32016216).

Almost surely, 2^165136223 is an apocalyptic number.

165136223 is a deficient number, since it is larger than the sum of its proper divisors (26961073).

165136223 is an equidigital number, since it uses as much as digits as its factorization.

165136223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370141 (or 3370134 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 165136223 is about 12850.5339577778. The cubic root of 165136223 is about 548.6315544920.

Adding to 165136223 its reverse (322631561), we get a palindrome (487767784).

The spelling of 165136223 in words is "one hundred sixty-five million, one hundred thirty-six thousand, two hundred twenty-three".