523405223 has 12 divisors (see below), whose sum is σ = 578230800. Its totient is φ = 473410080.

The previous prime is 523405199. The next prime is 523405229. The reversal of 523405223 is 322504325.

It is not a de Polignac number, because 523405223 - 2¹⁰ = 523404199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 523405192 and 523405201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523405229) 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 11 ways as a sum of consecutive naturals, for example, 13211 + ... + 34947.

It is an arithmetic number, because the mean of its divisors is an integer number (48185900).

Almost surely, 2^523405223 is an apocalyptic number.

523405223 is a deficient number, since it is larger than the sum of its proper divisors (54825577).

523405223 is a wasteful number, since it uses less digits than its factorization.

523405223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21958 (or 21947 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 523405223 is about 22878.0511189218. The cubic root of 523405223 is about 805.8966504187.

Adding to 523405223 its reverse (322504325), we get a palindrome (845909548).

The spelling of 523405223 in words is "five hundred twenty-three million, four hundred five thousand, two hundred twenty-three".