163123 has 4 divisors (see below), whose sum is σ = 164320. Its totient is φ = 161928.

The previous prime is 163117. The next prime is 163127. The reversal of 163123 is 321361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321361 = 97 ⋅3313.

It is a cyclic number.

It is not a de Polignac number, because 163123 - 2⁹ = 162611 is a prime.

It is a super-2 number, since 2×163123² = 53218226258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163097 and 163106.

It is not an unprimeable number, because it can be changed into a prime (163127) 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, 363 + ... + 676.

It is an arithmetic number, because the mean of its divisors is an integer number (41080).

2¹⁶³¹²³ is an apocalyptic number.

163123 is a deficient number, since it is larger than the sum of its proper divisors (1197).

163123 is a wasteful number, since it uses less digits than its factorization.

163123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its digits is 108, while the sum is 16.

The square root of 163123 is about 403.8848845897. The cubic root of 163123 is about 54.6392924286.

Adding to 163123 its reverse (321361), we get a palindrome (484484).

The spelling of 163123 in words is "one hundred sixty-three thousand, one hundred twenty-three".