131331523325545 has 8 divisors (see below), whose sum is σ = 157699307605896. Its totient is φ = 104997565583616.

The previous prime is 131331523325543. The next prime is 131331523325699. The reversal of 131331523325545 is 545523325133131.

It can be written as a sum of positive squares in 4 ways, for example, as 1995924723984 + 129335598601561 = 1412772^2 + 11372581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131331523325545 - 2¹ = 131331523325543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131331523325495 and 131331523325504.

It is not an unprimeable number, because it can be changed into a prime (131331523325543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8456626062 + ... + 8456641591.

It is an arithmetic number, because the mean of its divisors is an integer number (19712413450737).

Almost surely, 2^{131331523325545} is an apocalyptic number.

It is an amenable number.

131331523325545 is a deficient number, since it is larger than the sum of its proper divisors (26367784280351).

131331523325545 is a wasteful number, since it uses less digits than its factorization.

131331523325545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16913269211.

The product of its digits is 2430000, while the sum is 46.

Adding to 131331523325545 its reverse (545523325133131), we get a palindrome (676854848458676).

The spelling of 131331523325545 in words is "one hundred thirty-one trillion, three hundred thirty-one billion, five hundred twenty-three million, three hundred twenty-five thousand, five hundred forty-five".