131530544437 has 2 divisors, whose sum is σ = 131530544438. Its totient is φ = 131530544436.

The previous prime is 131530544407. The next prime is 131530544443. The reversal of 131530544437 is 734445035131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124768607076 + 6761937361 = 353226^2 + 82231^2 .

It is a cyclic number.

It is not a de Polignac number, because 131530544437 - 2⁷ = 131530544309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131530544437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131530544407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65765272218 + 65765272219.

It is an arithmetic number, because the mean of its divisors is an integer number (65765272219).

Almost surely, 2^131530544437 is an apocalyptic number.

It is an amenable number.

131530544437 is a deficient number, since it is larger than the sum of its proper divisors (1).

131530544437 is an equidigital number, since it uses as much as digits as its factorization.

131530544437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 40.

Adding to 131530544437 its reverse (734445035131), we get a palindrome (865975579568).

The spelling of 131530544437 in words is "one hundred thirty-one billion, five hundred thirty million, five hundred forty-four thousand, four hundred thirty-seven".