8162131 has 4 divisors (see below), whose sum is σ = 8351992. Its totient is φ = 7972272.

The previous prime is 8162123. The next prime is 8162149. The reversal of 8162131 is 1312618.

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

It is a cyclic number.

It is not a de Polignac number, because 8162131 - 2³ = 8162123 is a prime.

It is a super-2 number, since 2×8162131² = 133240764922322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8162111) 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 in 3 ways as a sum of consecutive naturals, for example, 94866 + ... + 94951.

It is an arithmetic number, because the mean of its divisors is an integer number (2087998).

Almost surely, 2^8162131 is an apocalyptic number.

8162131 is a deficient number, since it is larger than the sum of its proper divisors (189861).

8162131 is a wasteful number, since it uses less digits than its factorization.

8162131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189860.

The product of its digits is 288, while the sum is 22.

The square root of 8162131 is about 2856.9443466753. The cubic root of 8162131 is about 201.3420658196.

Adding to 8162131 its reverse (1312618), we get a palindrome (9474749).

The spelling of 8162131 in words is "eight million, one hundred sixty-two thousand, one hundred thirty-one".