131136091 has 2 divisors, whose sum is σ = 131136092. Its totient is φ = 131136090.

The previous prime is 131136067. The next prime is 131136121. The reversal of 131136091 is 190631131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131136091 - 2⁵ = 131136059 is a prime.

It is not a weakly prime, because it can be changed into another prime (131136001) 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, 65568045 + 65568046.

It is an arithmetic number, because the mean of its divisors is an integer number (65568046).

Almost surely, 2^131136091 is an apocalyptic number.

131136091 is a deficient number, since it is larger than the sum of its proper divisors (1).

131136091 is an equidigital number, since it uses as much as digits as its factorization.

131136091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 131136091 is about 11451.4667619480. The cubic root of 131136091 is about 508.0511178333.

The spelling of 131136091 in words is "one hundred thirty-one million, one hundred thirty-six thousand, ninety-one".