131689042391 has 2 divisors, whose sum is σ = 131689042392. Its totient is φ = 131689042390.

The previous prime is 131689042379. The next prime is 131689042417. The reversal of 131689042391 is 193240986131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131689042391 - 2³⁰ = 130615300567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131689042091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65844521195 + 65844521196.

It is an arithmetic number, because the mean of its divisors is an integer number (65844521196).

Almost surely, 2^131689042391 is an apocalyptic number.

131689042391 is a deficient number, since it is larger than the sum of its proper divisors (1).

131689042391 is an equidigital number, since it uses as much as digits as its factorization.

131689042391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 131689042391 in words is "one hundred thirty-one billion, six hundred eighty-nine million, forty-two thousand, three hundred ninety-one".