131095091 has 2 divisors, whose sum is σ = 131095092. Its totient is φ = 131095090.

The previous prime is 131095087. The next prime is 131095093. The reversal of 131095091 is 190590131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131095091 - 2² = 131095087 is a prime.

It is a Sophie Germain prime.

Together with 131095093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131095093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65547545 + 65547546.

It is an arithmetic number, because the mean of its divisors is an integer number (65547546).

Almost surely, 2^131095091 is an apocalyptic number.

131095091 is a deficient number, since it is larger than the sum of its proper divisors (1).

131095091 is an equidigital number, since it uses as much as digits as its factorization.

131095091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 131095091 is about 11449.6764583110. The cubic root of 131095091 is about 507.9981645314.

The spelling of 131095091 in words is "one hundred thirty-one million, ninety-five thousand, ninety-one".