523224321 has 16 divisors (see below), whose sum is σ = 711737280. Its totient is φ = 341781440.

The previous prime is 523224319. The next prime is 523224341. The reversal of 523224321 is 123422325.

It is a cyclic number.

It is not a de Polignac number, because 523224321 - 2¹ = 523224319 is a prime.

It is a super-2 number, since 2×523224321² = 547527380171822082, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 523224291 and 523224300.

It is not an unprimeable number, because it can be changed into a prime (523224341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152695 + ... + 156083.

It is an arithmetic number, because the mean of its divisors is an integer number (44483580).

Almost surely, 2^523224321 is an apocalyptic number.

It is an amenable number.

523224321 is a deficient number, since it is larger than the sum of its proper divisors (188512959).

523224321 is a wasteful number, since it uses less digits than its factorization.

523224321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416.

The product of its digits is 2880, while the sum is 24.

The square root of 523224321 is about 22874.0971625111. The cubic root of 523224321 is about 805.8037936742.

Adding to 523224321 its reverse (123422325), we get a palindrome (646646646).

The spelling of 523224321 in words is "five hundred twenty-three million, two hundred twenty-four thousand, three hundred twenty-one".