12403023 has 4 divisors (see below), whose sum is σ = 16537368. Its totient is φ = 8268680.
The previous prime is 12403019. The next prime is 12403031. The reversal of 12403023 is 32030421.
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 12403023 - 22 = 12403019 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 12402993 and 12403011.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12403043) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067168 + ... + 2067173.
It is an arithmetic number, because the mean of its divisors is an integer number (4134342).
Almost surely, 212403023 is an apocalyptic number.
12403023 is a deficient number, since it is larger than the sum of its proper divisors (4134345).
12403023 is an equidigital number, since it uses as much as digits as its factorization.
12403023 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4134344.
The product of its (nonzero) digits is 144, while the sum is 15.
The square root of 12403023 is about 3521.7925833303. The cubic root of 12403023 is about 231.4777130714.
Adding to 12403023 its reverse (32030421), we get a palindrome (44433444).
The spelling of 12403023 in words is "twelve million, four hundred three thousand, twenty-three".
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