131241533177 has 2 divisors, whose sum is σ = 131241533178. Its totient is φ = 131241533176.

The previous prime is 131241533141. The next prime is 131241533201. The reversal of 131241533177 is 771335142131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125336532841 + 5905000336 = 354029^2 + 76844^2 .

It is a cyclic number.

It is not a de Polignac number, because 131241533177 - 2⁸ = 131241532921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131241533177.

It is not a weakly prime, because it can be changed into another prime (131241533107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65620766588 + 65620766589.

It is an arithmetic number, because the mean of its divisors is an integer number (65620766589).

Almost surely, 2^131241533177 is an apocalyptic number.

It is an amenable number.

131241533177 is a deficient number, since it is larger than the sum of its proper divisors (1).

131241533177 is an equidigital number, since it uses as much as digits as its factorization.

131241533177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The spelling of 131241533177 in words is "one hundred thirty-one billion, two hundred forty-one million, five hundred thirty-three thousand, one hundred seventy-seven".