320123 has 4 divisors (see below), whose sum is σ = 322320. Its totient is φ = 317928.

The previous prime is 320119. The next prime is 320141. The reversal of 320123 is 321023.

320123 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321023 = 89 ⋅3607.

It is a cyclic number.

It is not a de Polignac number, because 320123 - 2² = 320119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (80580).

2³²⁰¹²³ is an apocalyptic number.

320123 is a deficient number, since it is larger than the sum of its proper divisors (2197).

320123 is a wasteful number, since it uses less digits than its factorization.

320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 320123 is about 565.7941321718. The cubic root of 320123 is about 68.4078003712.

Adding to 320123 its reverse (321023), we get a palindrome (641146).

Subtracting 320123 from its reverse (321023), we obtain a square (900 = 30²).

The spelling of 320123 in words is "three hundred twenty thousand, one hundred twenty-three", and thus it is an iban number.