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BaseRepresentation
bin10111011110111
3121111022
42323313
5341043
6131355
750024
oct27367
917438
1012023
119040
126b5b
13561b
14454b
153868
hex2ef7

12023 has 4 divisors (see below), whose sum is σ = 13128. Its totient is φ = 10920.

The previous prime is 12011. The next prime is 12037. The reversal of 12023 is 32021.

Adding to 12023 its reverse (32021), we get a palindrome (44044).

12023 = 122 + 132 + ... + 332.

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

It is a cyclic number.

It is not a de Polignac number, because 12023 - 24 = 12007 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 12023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043) 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, 536 + ... + 557.

It is an arithmetic number, because the mean of its divisors is an integer number (3282).

212023 is an apocalyptic number.

12023 is a deficient number, since it is larger than the sum of its proper divisors (1105).

12023 is a wasteful number, since it uses less digits than its factorization.

12023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 12023 is about 109.6494414030. The cubic root of 12023 is about 22.9089024202.

The spelling of 12023 in words is "twelve thousand, twenty-three", and thus it is an iban number.

Divisors: 1 11 1093 12023