131541191 has 2 divisors, whose sum is σ = 131541192. Its totient is φ = 131541190.

The previous prime is 131541181. The next prime is 131541227. The reversal of 131541191 is 191145131.

It is a weak prime.

It is an emirp because it is prime and its reverse (191145131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131541191 - 2²⁶ = 64432327 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131541191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131541101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65770595 + 65770596.

It is an arithmetic number, because the mean of its divisors is an integer number (65770596).

Almost surely, 2^131541191 is an apocalyptic number.

131541191 is a deficient number, since it is larger than the sum of its proper divisors (1).

131541191 is an equidigital number, since it uses as much as digits as its factorization.

131541191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 26.

The square root of 131541191 is about 11469.1408135047. The cubic root of 131541191 is about 508.5737299817.

The spelling of 131541191 in words is "one hundred thirty-one million, five hundred forty-one thousand, one hundred ninety-one".