131376509 has 8 divisors (see below), whose sum is σ = 144798528. Its totient is φ = 118200960.

The previous prime is 131376461. The next prime is 131376541. The reversal of 131376509 is 905673131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131376509 - 2¹⁶ = 131310973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131376599) 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 in 7 ways as a sum of consecutive naturals, for example, 60497 + ... + 62630.

It is an arithmetic number, because the mean of its divisors is an integer number (18099816).

Almost surely, 2^131376509 is an apocalyptic number.

It is an amenable number.

131376509 is a deficient number, since it is larger than the sum of its proper divisors (13422019).

131376509 is a wasteful number, since it uses less digits than its factorization.

131376509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123235.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 131376509 is about 11461.9592129793. The cubic root of 131376509 is about 508.3614063388.

The spelling of 131376509 in words is "one hundred thirty-one million, three hundred seventy-six thousand, five hundred nine".