131579547317 has 2 divisors, whose sum is σ = 131579547318. Its totient is φ = 131579547316.

The previous prime is 131579547287. The next prime is 131579547361. The reversal of 131579547317 is 713745975131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106990484836 + 24589062481 = 327094^2 + 156809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131579547317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131579547017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65789773658 + 65789773659.

It is an arithmetic number, because the mean of its divisors is an integer number (65789773659).

Almost surely, 2^131579547317 is an apocalyptic number.

It is an amenable number.

131579547317 is a deficient number, since it is larger than the sum of its proper divisors (1).

131579547317 is an equidigital number, since it uses as much as digits as its factorization.

131579547317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2778300, while the sum is 53.

The spelling of 131579547317 in words is "one hundred thirty-one billion, five hundred seventy-nine million, five hundred forty-seven thousand, three hundred seventeen".