131671671 has 4 divisors (see below), whose sum is σ = 175562232. Its totient is φ = 87781112.

The previous prime is 131671669. The next prime is 131671703. The reversal of 131671671 is 176176131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131671671 - 2¹ = 131671669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131671621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21945276 + ... + 21945281.

It is an arithmetic number, because the mean of its divisors is an integer number (43890558).

Almost surely, 2^131671671 is an apocalyptic number.

131671671 is a deficient number, since it is larger than the sum of its proper divisors (43890561).

131671671 is an equidigital number, since it uses as much as digits as its factorization.

131671671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43890560.

The product of its digits is 5292, while the sum is 33.

The square root of 131671671 is about 11474.8277111249. The cubic root of 131671671 is about 508.7418313720.

The spelling of 131671671 in words is "one hundred thirty-one million, six hundred seventy-one thousand, six hundred seventy-one".