131473 has 4 divisors (see below), whose sum is σ = 133348. Its totient is φ = 129600.

The previous prime is 131449. The next prime is 131477. The reversal of 131473 is 374131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374131 = 157 ⋅2383.

It can be written as a sum of positive squares in 2 ways, for example, as 43264 + 88209 = 208^2 + 297^2 .

It is a cyclic number.

It is not a de Polignac number, because 131473 - 2⁵ = 131441 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131473.

It is not an unprimeable number, because it can be changed into a prime (131477) 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 3 ways as a sum of consecutive naturals, for example, 828 + ... + 973.

It is an arithmetic number, because the mean of its divisors is an integer number (33337).

2¹³¹⁴⁷³ is an apocalyptic number.

It is an amenable number.

131473 is a deficient number, since it is larger than the sum of its proper divisors (1875).

131473 is an equidigital number, since it uses as much as digits as its factorization.

131473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its digits is 252, while the sum is 19.

The square root of 131473 is about 362.5920572765. The cubic root of 131473 is about 50.8485833191.

The spelling of 131473 in words is "one hundred thirty-one thousand, four hundred seventy-three".