131773 has 4 divisors (see below), whose sum is σ = 132508. Its totient is φ = 131040.

The previous prime is 131771. The next prime is 131777. The reversal of 131773 is 377131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 729 + 131044 = 27^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 131773 - 2¹ = 131771 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103 + ... + 523.

It is an arithmetic number, because the mean of its divisors is an integer number (33127).

2¹³¹⁷⁷³ is an apocalyptic number.

It is an amenable number.

131773 is a deficient number, since it is larger than the sum of its proper divisors (735).

131773 is an equidigital number, since it uses as much as digits as its factorization.

131773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734.

The product of its digits is 441, while the sum is 22.

The square root of 131773 is about 363.0055096001. The cubic root of 131773 is about 50.8872300041.

It can be divided in two parts, 1317 and 73, that multiplied together give a triangular number (96141 = T₄₃₈).

The spelling of 131773 in words is "one hundred thirty-one thousand, seven hundred seventy-three".