131431102020017 has 2 divisors, whose sum is σ = 131431102020018. Its totient is φ = 131431102020016.

The previous prime is 131431102020013. The next prime is 131431102020047. The reversal of 131431102020017 is 710020201134131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103575074169856 + 27856027850161 = 10177184^2 + 5277881^2 .

It is an emirp because it is prime and its reverse (710020201134131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131431102020017 - 2² = 131431102020013 is a prime.

It is a super-2 number, since 2×131431102020017² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131431102020013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65715551010008 + 65715551010009.

It is an arithmetic number, because the mean of its divisors is an integer number (65715551010009).

Almost surely, 2^{131431102020017} is an apocalyptic number.

It is an amenable number.

131431102020017 is a deficient number, since it is larger than the sum of its proper divisors (1).

131431102020017 is an equidigital number, since it uses as much as digits as its factorization.

131431102020017 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 131431102020017 its reverse (710020201134131), we get a palindrome (841451303154148).

The spelling of 131431102020017 in words is "one hundred thirty-one trillion, four hundred thirty-one billion, one hundred two million, twenty thousand, seventeen".