162328321 has 4 divisors (see below), whose sum is σ = 162354132. Its totient is φ = 162302512.

The previous prime is 162328289. The next prime is 162328333. The reversal of 162328321 is 123823261.

162328321 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 a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 63425296 + 98903025 = 7964^2 + 9945^2 .

It is a cyclic number.

It is not a de Polignac number, because 162328321 - 2⁵ = 162328289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162328321.

It is not an unprimeable number, because it can be changed into a prime (162328351) 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, 3375 + ... + 18331.

It is an arithmetic number, because the mean of its divisors is an integer number (40588533).

Almost surely, 2^162328321 is an apocalyptic number.

It is an amenable number.

162328321 is a deficient number, since it is larger than the sum of its proper divisors (25811).

162328321 is a wasteful number, since it uses less digits than its factorization.

162328321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25810.

The product of its digits is 3456, while the sum is 28.

The square root of 162328321 is about 12740.8132001062. The cubic root of 162328321 is about 545.5042002363.

The spelling of 162328321 in words is "one hundred sixty-two million, three hundred twenty-eight thousand, three hundred twenty-one".