523143321111 has 12 divisors (see below), whose sum is σ = 757554873192. Its totient is φ = 347883717456.

The previous prime is 523143321067. The next prime is 523143321137. The reversal of 523143321111 is 111123341325.

523143321111 is a `hidden beast` number, since 5 + 2 + 3 + 1 + 433 + 211 + 11 = 666.

It is not a de Polignac number, because 523143321111 - 2¹⁷ = 523143190039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523143321191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73204281 + ... + 73211426.

It is an arithmetic number, because the mean of its divisors is an integer number (63129572766).

Almost surely, 2^523143321111 is an apocalyptic number.

523143321111 is a deficient number, since it is larger than the sum of its proper divisors (234411552081).

523143321111 is a wasteful number, since it uses less digits than its factorization.

523143321111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146416110 (or 146416107 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

Adding to 523143321111 its reverse (111123341325), we get a palindrome (634266662436).

The spelling of 523143321111 in words is "five hundred twenty-three billion, one hundred forty-three million, three hundred twenty-one thousand, one hundred eleven".