523522131 has 16 divisors (see below), whose sum is σ = 764658048. Its totient is φ = 315964800.

The previous prime is 523522099. The next prime is 523522133. The reversal of 523522131 is 131225325.

It is a happy number.

It is not a de Polignac number, because 523522131 - 2⁵ = 523522099 is a prime.

It is a super-2 number, since 2×523522131² = 548150843293562322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523522133) 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, 24961 + ... + 40866.

It is an arithmetic number, because the mean of its divisors is an integer number (47791128).

Almost surely, 2^523522131 is an apocalyptic number.

523522131 is a deficient number, since it is larger than the sum of its proper divisors (241135917).

523522131 is a wasteful number, since it uses less digits than its factorization.

523522131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66082.

The product of its digits is 1800, while the sum is 24.

The square root of 523522131 is about 22880.6060015901. The cubic root of 523522131 is about 805.9566477513.

Adding to 523522131 its reverse (131225325), we get a palindrome (654747456).

The spelling of 523522131 in words is "five hundred twenty-three million, five hundred twenty-two thousand, one hundred thirty-one".