131342424243181 has 2 divisors, whose sum is σ = 131342424243182. Its totient is φ = 131342424243180.

The previous prime is 131342424243113. The next prime is 131342424243299. The reversal of 131342424243181 is 181342424243131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104138636967556 + 27203787275625 = 10204834^2 + 5215725^2 .

It is a cyclic number.

It is not a de Polignac number, because 131342424243181 - 2⁴⁵ = 96158052154349 is a prime.

It is a super-2 number, since 2×131342424243181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131342424643181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65671212121590 + 65671212121591.

It is an arithmetic number, because the mean of its divisors is an integer number (65671212121591).

Almost surely, 2^{131342424243181} is an apocalyptic number.

It is an amenable number.

131342424243181 is a deficient number, since it is larger than the sum of its proper divisors (1).

131342424243181 is an equidigital number, since it uses as much as digits as its factorization.

131342424243181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 43.

The spelling of 131342424243181 in words is "one hundred thirty-one trillion, three hundred forty-two billion, four hundred twenty-four million, two hundred forty-three thousand, one hundred eighty-one".