131673163 has 4 divisors (see below), whose sum is σ = 132050800. Its totient is φ = 131295528.

The previous prime is 131673133. The next prime is 131673169. The reversal of 131673163 is 361376131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361376131 = 18947 ⋅19073.

It is a cyclic number.

It is not a de Polignac number, because 131673163 - 2²¹ = 129576011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131673169) 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, 188295 + ... + 188992.

It is an arithmetic number, because the mean of its divisors is an integer number (33012700).

Almost surely, 2^131673163 is an apocalyptic number.

131673163 is a deficient number, since it is larger than the sum of its proper divisors (377637).

131673163 is an equidigital number, since it uses as much as digits as its factorization.

131673163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377636.

The product of its digits is 6804, while the sum is 31.

The square root of 131673163 is about 11474.8927228101. The cubic root of 131673163 is about 508.7437529191.

The spelling of 131673163 in words is "one hundred thirty-one million, six hundred seventy-three thousand, one hundred sixty-three".