131447 has 2 divisors, whose sum is σ = 131448. Its totient is φ = 131446.

The previous prime is 131441. The next prime is 131449. The reversal of 131447 is 744131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131447 - 2⁴ = 131431 is a prime.

Together with 131449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 131447.

It is not a weakly prime, because it can be changed into another prime (131441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65723 + 65724.

It is an arithmetic number, because the mean of its divisors is an integer number (65724).

2¹³¹⁴⁴⁷ is an apocalyptic number.

131447 is a deficient number, since it is larger than the sum of its proper divisors (1).

131447 is an equidigital number, since it uses as much as digits as its factorization.

131447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 131447 is about 362.5562025397. The cubic root of 131447 is about 50.8452311724.

Adding to 131447 its reverse (744131), we get a palindrome (875578).

The spelling of 131447 in words is "one hundred thirty-one thousand, four hundred forty-seven".