131559423 has 8 divisors (see below), whose sum is σ = 176037936. Its totient is φ = 87393600.

The previous prime is 131559377. The next prime is 131559433. The reversal of 131559423 is 324955131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131559423 - 2¹² = 131555327 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131559433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77188 + ... + 78873.

It is an arithmetic number, because the mean of its divisors is an integer number (22004742).

Almost surely, 2^131559423 is an apocalyptic number.

131559423 is a deficient number, since it is larger than the sum of its proper divisors (44478513).

131559423 is a wasteful number, since it uses less digits than its factorization.

131559423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156345.

The product of its digits is 16200, while the sum is 33.

The square root of 131559423 is about 11469.9356144662. The cubic root of 131559423 is about 508.5972255064.

It can be divided in two parts, 13155 and 9423, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 131559423 in words is "one hundred thirty-one million, five hundred fifty-nine thousand, four hundred twenty-three".