12023533 has 4 divisors (see below), whose sum is σ = 12057948. Its totient is φ = 11989120.

The previous prime is 12023513. The next prime is 12023569. The reversal of 12023533 is 33532021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33532021 = 401 ⋅83621.

It can be written as a sum of positive squares in 2 ways, for example, as 1408969 + 10614564 = 1187^2 + 3258^2 .

It is a cyclic number.

It is not a de Polignac number, because 12023533 - 2⁹ = 12023021 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 12023533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16678 + ... + 17383.

It is an arithmetic number, because the mean of its divisors is an integer number (3014487).

Almost surely, 2^12023533 is an apocalyptic number.

It is an amenable number.

12023533 is a deficient number, since it is larger than the sum of its proper divisors (34415).

12023533 is an equidigital number, since it uses as much as digits as its factorization.

12023533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34414.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 12023533 is about 3467.4966474389. The cubic root of 12023533 is about 229.0924094542.

Adding to 12023533 its reverse (33532021), we get a palindrome (45555554).

It can be divided in two parts, 120 and 23533, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 12023533 in words is "twelve million, twenty-three thousand, five hundred thirty-three".