8523131 has 2 divisors, whose sum is σ = 8523132. Its totient is φ = 8523130.

The previous prime is 8523127. The next prime is 8523139. The reversal of 8523131 is 1313258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8523131 - 2² = 8523127 is a prime.

It is a super-2 number, since 2×8523131² = 145287524086322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8523097 and 8523106.

It is not a weakly prime, because it can be changed into another prime (8523139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4261565 + 4261566.

It is an arithmetic number, because the mean of its divisors is an integer number (4261566).

Almost surely, 2^8523131 is an apocalyptic number.

8523131 is a deficient number, since it is larger than the sum of its proper divisors (1).

8523131 is an equidigital number, since it uses as much as digits as its factorization.

8523131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 8523131 is about 2919.4401860631. The cubic root of 8523131 is about 204.2677104915.

Adding to 8523131 its reverse (1313258), we get a palindrome (9836389).

The spelling of 8523131 in words is "eight million, five hundred twenty-three thousand, one hundred thirty-one".