131544839 has 2 divisors, whose sum is σ = 131544840. Its totient is φ = 131544838.

The previous prime is 131544821. The next prime is 131544859. The reversal of 131544839 is 938445131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131544839 is a prime.

It is a Sophie Germain 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 (131544859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65772419 + 65772420.

It is an arithmetic number, because the mean of its divisors is an integer number (65772420).

Almost surely, 2^131544839 is an apocalyptic number.

131544839 is a deficient number, since it is larger than the sum of its proper divisors (1).

131544839 is an equidigital number, since it uses as much as digits as its factorization.

131544839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 131544839 is about 11469.2998478547. The cubic root of 131544839 is about 508.5784313223.

The spelling of 131544839 in words is "one hundred thirty-one million, five hundred forty-four thousand, eight hundred thirty-nine".