523212111 has 24 divisors (see below), whose sum is σ = 819733824. Its totient is φ = 320279040.

The previous prime is 523212091. The next prime is 523212127. The reversal of 523212111 is 111212325.

It is not a de Polignac number, because 523212111 - 2¹⁴ = 523195727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523212511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35431 + ... + 47976.

It is an arithmetic number, because the mean of its divisors is an integer number (34155576).

Almost surely, 2^523212111 is an apocalyptic number.

523212111 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

523212111 is a deficient number, since it is larger than the sum of its proper divisors (296521713).

523212111 is a wasteful number, since it uses less digits than its factorization.

523212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83471 (or 83468 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 523212111 is about 22873.8302651742. The cubic root of 523212111 is about 805.7975255272.

Adding to 523212111 its reverse (111212325), we get a palindrome (634424436).

The spelling of 523212111 in words is "five hundred twenty-three million, two hundred twelve thousand, one hundred eleven".