131892191 has 2 divisors, whose sum is σ = 131892192. Its totient is φ = 131892190.

The previous prime is 131892179. The next prime is 131892193. The reversal of 131892191 is 191298131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131892191 - 2¹⁰ = 131891167 is a prime.

Together with 131892193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131892193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65946095 + 65946096.

It is an arithmetic number, because the mean of its divisors is an integer number (65946096).

Almost surely, 2^131892191 is an apocalyptic number.

131892191 is a deficient number, since it is larger than the sum of its proper divisors (1).

131892191 is an equidigital number, since it uses as much as digits as its factorization.

131892191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 35.

The square root of 131892191 is about 11484.4325501959. The cubic root of 131892191 is about 509.0256817917.

The spelling of 131892191 in words is "one hundred thirty-one million, eight hundred ninety-two thousand, one hundred ninety-one".