131719387 has 8 divisors (see below), whose sum is σ = 134990336. Its totient is φ = 128486952.

The previous prime is 131719373. The next prime is 131719397. The reversal of 131719387 is 783917131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131719387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131719337) 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, 2643 + ... + 16444.

It is an arithmetic number, because the mean of its divisors is an integer number (16873792).

Almost surely, 2^131719387 is an apocalyptic number.

131719387 is a deficient number, since it is larger than the sum of its proper divisors (3270949).

131719387 is a wasteful number, since it uses less digits than its factorization.

131719387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19257.

The product of its digits is 31752, while the sum is 40.

The square root of 131719387 is about 11476.9066825517. The cubic root of 131719387 is about 508.8032776277.

The spelling of 131719387 in words is "one hundred thirty-one million, seven hundred nineteen thousand, three hundred eighty-seven".