23123 has 4 divisors (see below), whose sum is σ = 24360. Its totient is φ = 21888.

The previous prime is 23117. The next prime is 23131. The reversal of 23123 is 32132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23123 - 2⁶ = 23059 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (23143) 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, 590 + ... + 627.

It is an arithmetic number, because the mean of its divisors is an integer number (6090).

2²³¹²³ is an apocalyptic number.

23123 is a deficient number, since it is larger than the sum of its proper divisors (1237).

23123 is a wasteful number, since it uses less digits than its factorization.

23123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236.

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

The square root of 23123 is about 152.0624871558. The cubic root of 23123 is about 28.4892747167.

Adding to 23123 its reverse (32132), we get a palindrome (55255).

Subtracting 23123 from its reverse (32132), we obtain a palindrome (9009).

It can be divided in two parts, 2 and 3123, that added together give a 5-th power (3125 = 5⁵).

The spelling of 23123 in words is "twenty-three thousand, one hundred twenty-three", and thus it is an iban number.