131135606549 has 2 divisors, whose sum is σ = 131135606550. Its totient is φ = 131135606548.

The previous prime is 131135606491. The next prime is 131135606579. The reversal of 131135606549 is 945606531131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117636652324 + 13498954225 = 342982^2 + 116185^2 .

It is an emirp because it is prime and its reverse (945606531131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131135606549 - 2¹⁶ = 131135541013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131135606579) 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, 65567803274 + 65567803275.

It is an arithmetic number, because the mean of its divisors is an integer number (65567803275).

Almost surely, 2^131135606549 is an apocalyptic number.

It is an amenable number.

131135606549 is a deficient number, since it is larger than the sum of its proper divisors (1).

131135606549 is an equidigital number, since it uses as much as digits as its factorization.

131135606549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 131135606549 in words is "one hundred thirty-one billion, one hundred thirty-five million, six hundred six thousand, five hundred forty-nine".