131543 has 2 divisors, whose sum is σ = 131544.
Its totient is φ = 131542.
The previous prime is 131519. The next prime is 131561. The reversal of 131543 is 345131.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 131543 - 26 = 131479 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131143) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65771 + 65772.
It is an arithmetic number, because the mean of its divisors is an integer number (65772).
2131543 is an apocalyptic number.
131543 is a deficient number, since it is larger than the sum of its proper divisors (1).
131543 is an equidigital number, since it uses as much as digits as its factorization.
131543 is an evil number, because the sum of its binary digits is even.
The product of its digits is 180, while the sum is 17.
The square root of 131543 is about 362.6885716424.
The cubic root of 131543 is about 50.8576061332.
Adding to 131543 its reverse (345131), we get a palindrome (476674).
The spelling of 131543 in words is "one hundred thirty-one thousand, five hundred forty-three".