131243241191 has 2 divisors, whose sum is σ = 131243241192. Its totient is φ = 131243241190.

The previous prime is 131243241179. The next prime is 131243241223. The reversal of 131243241191 is 191142342131.

It is an a-pointer prime, because the next prime (131243241223) can be obtained adding 131243241191 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131243241191 - 2²⁶ = 131176132327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131243241121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65621620595 + 65621620596.

It is an arithmetic number, because the mean of its divisors is an integer number (65621620596).

Almost surely, 2^131243241191 is an apocalyptic number.

131243241191 is a deficient number, since it is larger than the sum of its proper divisors (1).

131243241191 is an equidigital number, since it uses as much as digits as its factorization.

131243241191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The spelling of 131243241191 in words is "one hundred thirty-one billion, two hundred forty-three million, two hundred forty-one thousand, one hundred ninety-one".