20184223 has 2 divisors, whose sum is σ = 20184224. Its totient is φ = 20184222.

The previous prime is 20184181. The next prime is 20184233. The reversal of 20184223 is 32248102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20184223 - 2⁹ = 20183711 is a prime.

It is a super-2 number, since 2×20184223² = 814805716227458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20184194 and 20184203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20184233) 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 as a sum of consecutive naturals, namely, 10092111 + 10092112.

It is an arithmetic number, because the mean of its divisors is an integer number (10092112).

Almost surely, 2^20184223 is an apocalyptic number.

20184223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20184223 is an equidigital number, since it uses as much as digits as its factorization.

20184223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20184223 is about 4492.6854997874. The cubic root of 20184223 is about 272.2726459851.

It can be divided in two parts, 2018 and 4223, that added together give a square (6241 = 79²).

The spelling of 20184223 in words is "twenty million, one hundred eighty-four thousand, two hundred twenty-three".