131306536601 has 8 divisors (see below), whose sum is σ = 132289447944. Its totient is φ = 130323980160.

The previous prime is 131306536597. The next prime is 131306536607. The reversal of 131306536601 is 106635603131.

It can be written as a sum of positive squares in 4 ways, for example, as 35298894400 + 96007642201 = 187880^2 + 309851^2 .

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 131306536601 - 2² = 131306536597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131306536607) 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, 678731 + ... + 850463.

It is an arithmetic number, because the mean of its divisors is an integer number (16536180993).

Almost surely, 2^131306536601 is an apocalyptic number.

It is an amenable number.

131306536601 is a deficient number, since it is larger than the sum of its proper divisors (982911343).

131306536601 is a wasteful number, since it uses less digits than its factorization.

131306536601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177451.

The product of its (nonzero) digits is 29160, while the sum is 35.

The spelling of 131306536601 in words is "one hundred thirty-one billion, three hundred six million, five hundred thirty-six thousand, six hundred one".