131966071 has 4 divisors (see below), whose sum is σ = 131999992. Its totient is φ = 131932152.

The previous prime is 131966063. The next prime is 131966089. The reversal of 131966071 is 170669131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170669131 = 23 ⋅7420397.

It is a cyclic number.

It is not a de Polignac number, because 131966071 - 2³ = 131966063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131966041) 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, 10236 + ... + 19201.

It is an arithmetic number, because the mean of its divisors is an integer number (32999998).

Almost surely, 2^131966071 is an apocalyptic number.

131966071 is a deficient number, since it is larger than the sum of its proper divisors (33921).

131966071 is an equidigital number, since it uses as much as digits as its factorization.

131966071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33920.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 131966071 is about 11487.6486279830. The cubic root of 131966071 is about 509.1207083873.

The spelling of 131966071 in words is "one hundred thirty-one million, nine hundred sixty-six thousand, seventy-one".