131673 has 4 divisors (see below), whose sum is σ = 175568. Its totient is φ = 87780.

The previous prime is 131671. The next prime is 131687. The reversal of 131673 is 376131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131673 - 2¹ = 131671 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131671) 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, 21943 + ... + 21948.

It is an arithmetic number, because the mean of its divisors is an integer number (43892).

2¹³¹⁶⁷³ is an apocalyptic number.

It is an amenable number.

131673 is a deficient number, since it is larger than the sum of its proper divisors (43895).

131673 is an equidigital number, since it uses as much as digits as its factorization.

131673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43894.

The product of its digits is 378, while the sum is 21.

The square root of 131673 is about 362.8677445020. The cubic root of 131673 is about 50.8743542992.

The spelling of 131673 in words is "one hundred thirty-one thousand, six hundred seventy-three".