8512131 has 4 divisors (see below), whose sum is σ = 11349512. Its totient is φ = 5674752.

The previous prime is 8512129. The next prime is 8512169. The reversal of 8512131 is 1312158.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8512131 - 2¹ = 8512129 is a prime.

It is a super-2 number, since 2×8512131² = 144912748322322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8512098 and 8512107.

It is not an unprimeable number, because it can be changed into a prime (8512111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418686 + ... + 1418691.

It is an arithmetic number, because the mean of its divisors is an integer number (2837378).

Almost surely, 2^8512131 is an apocalyptic number.

8512131 is a deficient number, since it is larger than the sum of its proper divisors (2837381).

8512131 is a wasteful number, since it uses less digits than its factorization.

8512131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837380.

The product of its digits is 240, while the sum is 21.

The square root of 8512131 is about 2917.5556549961. Note that the first 3 decimals coincide. The cubic root of 8512131 is about 204.1797963142.

Adding to 8512131 its reverse (1312158), we get a palindrome (9824289).

The spelling of 8512131 in words is "eight million, five hundred twelve thousand, one hundred thirty-one".