131771 has 2 divisors, whose sum is σ = 131772. Its totient is φ = 131770.

The previous prime is 131759. The next prime is 131777. The reversal of 131771 is 177131.

It is a strong prime.

It is an emirp because it is prime and its reverse (177131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131771 - 2⁶ = 131707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65885 + 65886.

It is an arithmetic number, because the mean of its divisors is an integer number (65886).

2¹³¹⁷⁷¹ is an apocalyptic number.

131771 is a deficient number, since it is larger than the sum of its proper divisors (1).

131771 is an equidigital number, since it uses as much as digits as its factorization.

131771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147, while the sum is 20.

The square root of 131771 is about 363.0027548105. The cubic root of 131771 is about 50.8869725539.

The spelling of 131771 in words is "one hundred thirty-one thousand, seven hundred seventy-one".