12023013 has 4 divisors (see below), whose sum is σ = 16030688. Its totient is φ = 8015340.

The previous prime is 12023003. The next prime is 12023021. The reversal of 12023013 is 31032021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-12023013 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 12023013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023003) 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, 2003833 + ... + 2003838.

It is an arithmetic number, because the mean of its divisors is an integer number (4007672).

Almost surely, 2^12023013 is an apocalyptic number.

It is an amenable number.

12023013 is a deficient number, since it is larger than the sum of its proper divisors (4007675).

12023013 is an equidigital number, since it uses as much as digits as its factorization.

12023013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007674.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12023013 is about 3467.4216645802. The cubic root of 12023013 is about 229.0891067708.

Adding to 12023013 its reverse (31032021), we get a palindrome (43055034).

The spelling of 12023013 in words is "twelve million, twenty-three thousand, thirteen".