131201102171 has 2 divisors, whose sum is σ = 131201102172. Its totient is φ = 131201102170.

The previous prime is 131201102111. The next prime is 131201102191. The reversal of 131201102171 is 171201102131.

It is an a-pointer prime, because the next prime (131201102191) can be obtained adding 131201102171 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131201102171 - 2²² = 131196907867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (131201102101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65600551085 + 65600551086.

It is an arithmetic number, because the mean of its divisors is an integer number (65600551086).

Almost surely, 2^131201102171 is an apocalyptic number.

131201102171 is a deficient number, since it is larger than the sum of its proper divisors (1).

131201102171 is an equidigital number, since it uses as much as digits as its factorization.

131201102171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 20.

The spelling of 131201102171 in words is "one hundred thirty-one billion, two hundred one million, one hundred two thousand, one hundred seventy-one".