131171443 has 4 divisors (see below), whose sum is σ = 141261568. Its totient is φ = 121081320.

The previous prime is 131171441. The next prime is 131171477. The reversal of 131171443 is 344171131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344171131 = 59 ⋅5833409.

It is a cyclic number.

It is not a de Polignac number, because 131171443 - 2¹ = 131171441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131171441) 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, 5045043 + ... + 5045068.

It is an arithmetic number, because the mean of its divisors is an integer number (35315392).

Almost surely, 2^131171443 is an apocalyptic number.

131171443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131171443 is a deficient number, since it is larger than the sum of its proper divisors (10090125).

131171443 is a wasteful number, since it uses less digits than its factorization.

131171443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10090124.

The product of its digits is 1008, while the sum is 25.

The square root of 131171443 is about 11453.0102156595. The cubic root of 131171443 is about 508.0967676344.

The spelling of 131171443 in words is "one hundred thirty-one million, one hundred seventy-one thousand, four hundred forty-three".