131201142111181 has 2 divisors, whose sum is σ = 131201142111182. Its totient is φ = 131201142111180.

The previous prime is 131201142111167. The next prime is 131201142111241. The reversal of 131201142111181 is 181111241102131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91899640144900 + 39301501966281 = 9586430^2 + 6269091^2 .

It is a cyclic number.

It is not a de Polignac number, because 131201142111181 - 2²⁷ = 131201007893453 is a prime.

It is a super-2 number, since 2×131201142111181² (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 (131201142111581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65600571055590 + 65600571055591.

It is an arithmetic number, because the mean of its divisors is an integer number (65600571055591).

Almost surely, 2^{131201142111181} is an apocalyptic number.

It is an amenable number.

131201142111181 is a deficient number, since it is larger than the sum of its proper divisors (1).

131201142111181 is an equidigital number, since it uses as much as digits as its factorization.

131201142111181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 28.

The spelling of 131201142111181 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred forty-two million, one hundred eleven thousand, one hundred eighty-one".