523520131 has 2 divisors, whose sum is σ = 523520132. Its totient is φ = 523520130.

The previous prime is 523520099. The next prime is 523520143. The reversal of 523520131 is 131025325.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523520131 - 2⁵ = 523520099 is a prime.

It is a super-2 number, since 2×523520131² = 548146655124514322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (523520191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261760065 + 261760066.

It is an arithmetic number, because the mean of its divisors is an integer number (261760066).

Almost surely, 2^523520131 is an apocalyptic number.

523520131 is a deficient number, since it is larger than the sum of its proper divisors (1).

523520131 is an equidigital number, since it uses as much as digits as its factorization.

523520131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 523520131 is about 22880.5622964122. The cubic root of 523520131 is about 805.9556214239.

Adding to 523520131 its reverse (131025325), we get a palindrome (654545456).

The spelling of 523520131 in words is "five hundred twenty-three million, five hundred twenty thousand, one hundred thirty-one".