131391829687 has 2 divisors, whose sum is σ = 131391829688. Its totient is φ = 131391829686.

The previous prime is 131391829651. The next prime is 131391829711. The reversal of 131391829687 is 786928193131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131391829687 is a prime.

It is a super-2 number, since 2×131391829687² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131391829637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65695914843 + 65695914844.

It is an arithmetic number, because the mean of its divisors is an integer number (65695914844).

Almost surely, 2^131391829687 is an apocalyptic number.

131391829687 is a deficient number, since it is larger than the sum of its proper divisors (1).

131391829687 is an equidigital number, since it uses as much as digits as its factorization.

131391829687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 58.

The spelling of 131391829687 in words is "one hundred thirty-one billion, three hundred ninety-one million, eight hundred twenty-nine thousand, six hundred eighty-seven".