131345540130001 has 4 divisors (see below), whose sum is σ = 134895419593012. Its totient is φ = 127795660666992.

The previous prime is 131345540129977. The next prime is 131345540130023. The reversal of 131345540130001 is 100031045543131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55941065349376 + 75404474780625 = 7479376^2 + 8683575^2 .

It is a cyclic number.

It is not a de Polignac number, because 131345540130001 - 2⁷ = 131345540129873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131345540130401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1774939731450 + ... + 1774939731523.

It is an arithmetic number, because the mean of its divisors is an integer number (33723854898253).

Almost surely, 2^{131345540130001} is an apocalyptic number.

It is an amenable number.

131345540130001 is a deficient number, since it is larger than the sum of its proper divisors (3549879463011).

131345540130001 is an equidigital number, since it uses as much as digits as its factorization.

131345540130001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549879463010.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 131345540130001 its reverse (100031045543131), we get a palindrome (231376585673132).

The spelling of 131345540130001 in words is "one hundred thirty-one trillion, three hundred forty-five billion, five hundred forty million, one hundred thirty thousand, one".