523243524321 has 144 divisors (see below), whose sum is σ = 961784678400. Its totient is φ = 267648893568.

The previous prime is 523243524317. The next prime is 523243524337. The reversal of 523243524321 is 123425342325.

523243524321 is a `hidden beast` number, since 5 + 2 + 324 + 3 + 5 + 2 + 4 + 321 = 666.

It is not a de Polignac number, because 523243524321 - 2² = 523243524317 is a prime.

It is a super-2 number, since 2×523243524321² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523243524361) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 47308290 + ... + 47319348.

Almost surely, 2^523243524321 is an apocalyptic number.

It is an amenable number.

523243524321 is a deficient number, since it is larger than the sum of its proper divisors (438541154079).

523243524321 is a wasteful number, since it uses less digits than its factorization.

523243524321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11196 (or 11164 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

Adding to 523243524321 its reverse (123425342325), we get a palindrome (646668866646).

The spelling of 523243524321 in words is "five hundred twenty-three billion, two hundred forty-three million, five hundred twenty-four thousand, three hundred twenty-one".