131544071 has 2 divisors, whose sum is σ = 131544072. Its totient is φ = 131544070.

The previous prime is 131544059. The next prime is 131544073. The reversal of 131544071 is 170445131.

It is a strong prime.

It is an emirp because it is prime and its reverse (170445131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131544071 is a prime.

Together with 131544073, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131544071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131544073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65772035 + 65772036.

It is an arithmetic number, because the mean of its divisors is an integer number (65772036).

Almost surely, 2^131544071 is an apocalyptic number.

131544071 is a deficient number, since it is larger than the sum of its proper divisors (1).

131544071 is an equidigital number, since it uses as much as digits as its factorization.

131544071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 131544071 is about 11469.2663671222. The cubic root of 131544071 is about 508.5774415736.

The spelling of 131544071 in words is "one hundred thirty-one million, five hundred forty-four thousand, seventy-one".