20441023 has 2 divisors, whose sum is σ = 20441024. Its totient is φ = 20441022.

The previous prime is 20440999. The next prime is 20441033. The reversal of 20441023 is 32014402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20441023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20440988 and 20441006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20441033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220511 + 10220512.

It is an arithmetic number, because the mean of its divisors is an integer number (10220512).

Almost surely, 2^20441023 is an apocalyptic number.

20441023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441023 is an equidigital number, since it uses as much as digits as its factorization.

20441023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20441023 is about 4521.1749579064. The cubic root of 20441023 is about 273.4224742307.

Adding to 20441023 its reverse (32014402), we get a palindrome (52455425).

The spelling of 20441023 in words is "twenty million, four hundred forty-one thousand, twenty-three".