131202173087 has 2 divisors, whose sum is σ = 131202173088. Its totient is φ = 131202173086.

The previous prime is 131202173023. The next prime is 131202173093. The reversal of 131202173087 is 780371202131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131202173087 - 2⁶ = 131202173023 is a prime.

It is a super-2 number, since 2×131202173087² (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 (131202173987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65601086543 + 65601086544.

It is an arithmetic number, because the mean of its divisors is an integer number (65601086544).

Almost surely, 2^131202173087 is an apocalyptic number.

131202173087 is a deficient number, since it is larger than the sum of its proper divisors (1).

131202173087 is an equidigital number, since it uses as much as digits as its factorization.

131202173087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 131202173087 in words is "one hundred thirty-one billion, two hundred two million, one hundred seventy-three thousand, eighty-seven".