131321241017 has 2 divisors, whose sum is σ = 131321241018. Its totient is φ = 131321241016.

The previous prime is 131321240993. The next prime is 131321241097. The reversal of 131321241017 is 710142123131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113868453136 + 17452787881 = 337444^2 + 132109^2 .

It is a cyclic number.

It is not a de Polignac number, because 131321241017 - 2⁸ = 131321240761 is a prime.

It is not a weakly prime, because it can be changed into another prime (131321241097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660620508 + 65660620509.

It is an arithmetic number, because the mean of its divisors is an integer number (65660620509).

Almost surely, 2^131321241017 is an apocalyptic number.

It is an amenable number.

131321241017 is a deficient number, since it is larger than the sum of its proper divisors (1).

131321241017 is an equidigital number, since it uses as much as digits as its factorization.

131321241017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 131321241017 its reverse (710142123131), we get a palindrome (841463364148).

The spelling of 131321241017 in words is "one hundred thirty-one billion, three hundred twenty-one million, two hundred forty-one thousand, seventeen".