20033023 has 4 divisors (see below), whose sum is σ = 20904048. Its totient is φ = 19162000.

The previous prime is 20033009. The next prime is 20033029. The reversal of 20033023 is 32033002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20033023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20032994 and 20033012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033029) 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, 435478 + ... + 435523.

It is an arithmetic number, because the mean of its divisors is an integer number (5226012).

Almost surely, 2^20033023 is an apocalyptic number.

20033023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20033023 is a deficient number, since it is larger than the sum of its proper divisors (871025).

20033023 is an equidigital number, since it uses as much as digits as its factorization.

20033023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871024.

The product of its (nonzero) digits is 108, while the sum is 13.

The square root of 20033023 is about 4475.8265158516. The cubic root of 20033023 is about 271.5910765308.

Adding to 20033023 its reverse (32033002), we get a palindrome (52066025).

The spelling of 20033023 in words is "twenty million, thirty-three thousand, twenty-three".