131491679 has 8 divisors (see below), whose sum is σ = 143665488. Its totient is φ = 119354560.

The previous prime is 131491669. The next prime is 131491681. The reversal of 131491679 is 976194131.

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 131491679 - 2⁴ = 131491663 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 (131491649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1382 + ... + 16275.

It is an arithmetic number, because the mean of its divisors is an integer number (17958186).

Almost surely, 2^131491679 is an apocalyptic number.

131491679 is a deficient number, since it is larger than the sum of its proper divisors (12173809).

131491679 is a wasteful number, since it uses less digits than its factorization.

131491679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18345.

The product of its digits is 40824, while the sum is 41.

The square root of 131491679 is about 11466.9821225988. The cubic root of 131491679 is about 508.5099130579.

The spelling of 131491679 in words is "one hundred thirty-one million, four hundred ninety-one thousand, six hundred seventy-nine".