165743223 has 4 divisors (see below), whose sum is σ = 220990968. Its totient is φ = 110495480.

The previous prime is 165743209. The next prime is 165743231. The reversal of 165743223 is 322347561.

165743223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322347561 = 3 ⋅107449187.

It is a cyclic number.

It is not a de Polignac number, because 165743223 - 2⁶ = 165743159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165743233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27623868 + ... + 27623873.

It is an arithmetic number, because the mean of its divisors is an integer number (55247742).

Almost surely, 2^165743223 is an apocalyptic number.

165743223 is a deficient number, since it is larger than the sum of its proper divisors (55247745).

165743223 is an equidigital number, since it uses as much as digits as its factorization.

165743223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55247744.

The product of its digits is 30240, while the sum is 33.

The square root of 165743223 is about 12874.1299900226. The cubic root of 165743223 is about 549.3029439393.

The spelling of 165743223 in words is "one hundred sixty-five million, seven hundred forty-three thousand, two hundred twenty-three".