131687319 has 8 divisors (see below), whose sum is σ = 175687792. Its totient is φ = 87739200.

The previous prime is 131687317. The next prime is 131687323. The reversal of 131687319 is 913786131.

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

It is not a de Polignac number, because 131687319 - 2¹ = 131687317 is a prime.

It is a super-2 number, since 2×131687319² = 34683099970815522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131687317) 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, 6784 + ... + 17589.

It is an arithmetic number, because the mean of its divisors is an integer number (21960974).

Almost surely, 2^131687319 is an apocalyptic number.

131687319 is a deficient number, since it is larger than the sum of its proper divisors (44000473).

131687319 is a wasteful number, since it uses less digits than its factorization.

131687319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26177.

The product of its digits is 27216, while the sum is 39.

The square root of 131687319 is about 11475.5095311712. The cubic root of 131687319 is about 508.7619837120.

The spelling of 131687319 in words is "one hundred thirty-one million, six hundred eighty-seven thousand, three hundred nineteen".