131155434337 has 2 divisors, whose sum is σ = 131155434338. Its totient is φ = 131155434336.

The previous prime is 131155434329. The next prime is 131155434349. The reversal of 131155434337 is 733434551131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108630227281 + 22525207056 = 329591^2 + 150084^2 .

It is a cyclic number.

It is not a de Polignac number, because 131155434337 - 2³ = 131155434329 is a prime.

It is a super-2 number, since 2×131155434337² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131155434337.

It is not a weakly prime, because it can be changed into another prime (131155734337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65577717168 + 65577717169.

It is an arithmetic number, because the mean of its divisors is an integer number (65577717169).

Almost surely, 2^131155434337 is an apocalyptic number.

It is an amenable number.

131155434337 is a deficient number, since it is larger than the sum of its proper divisors (1).

131155434337 is an equidigital number, since it uses as much as digits as its factorization.

131155434337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 40.

Adding to 131155434337 its reverse (733434551131), we get a palindrome (864589985468).

The spelling of 131155434337 in words is "one hundred thirty-one billion, one hundred fifty-five million, four hundred thirty-four thousand, three hundred thirty-seven".