131816086 has 4 divisors (see below), whose sum is σ = 197724132. Its totient is φ = 65908042.

The previous prime is 131816081. The next prime is 131816099. The reversal of 131816086 is 680618131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131816081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32954020 + ... + 32954023.

It is an arithmetic number, because the mean of its divisors is an integer number (49431033).

Almost surely, 2^131816086 is an apocalyptic number.

131816086 is a deficient number, since it is larger than the sum of its proper divisors (65908046).

131816086 is an equidigital number, since it uses as much as digits as its factorization.

131816086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65908045.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 131816086 is about 11481.1186737182. The cubic root of 131816086 is about 508.9277562239.

The spelling of 131816086 in words is "one hundred thirty-one million, eight hundred sixteen thousand, eighty-six".