131173 has 6 divisors (see below), whose sum is σ = 152646. Its totient is φ = 112392.

The previous prime is 131171. The next prime is 131203. The reversal of 131173 is 371131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74529 + 56644 = 273^2 + 238^2 .

It is not a de Polignac number, because 131173 - 2¹ = 131171 is a prime.

It is a Duffinian number.

131173 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1290 + ... + 1387.

It is an arithmetic number, because the mean of its divisors is an integer number (25441).

2¹³¹¹⁷³ is an apocalyptic number.

It is an amenable number.

131173 is a deficient number, since it is larger than the sum of its proper divisors (21473).

131173 is an equidigital number, since it uses as much as digits as its factorization.

131173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691 (or 2684 counting only the distinct ones).

The product of its digits is 63, while the sum is 16.

The square root of 131173 is about 362.1781329677. The cubic root of 131173 is about 50.8098777989.

It can be divided in two parts, 1311 and 73, that multiplied together give a triangular number (95703 = T₄₃₇).

The spelling of 131173 in words is "one hundred thirty-one thousand, one hundred seventy-three".