131771379 has 8 divisors (see below), whose sum is σ = 178317760. Its totient is φ = 86536296.

The previous prime is 131771377. The next prime is 131771401. The reversal of 131771379 is 973177131.

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

It is not a de Polignac number, because 131771379 - 2¹ = 131771377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131771371) 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, 327589 + ... + 327990.

It is an arithmetic number, because the mean of its divisors is an integer number (22289720).

Almost surely, 2^131771379 is an apocalyptic number.

131771379 is a deficient number, since it is larger than the sum of its proper divisors (46546381).

131771379 is an equidigital number, since it uses as much as digits as its factorization.

131771379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655649.

The product of its digits is 27783, while the sum is 39.

The square root of 131771379 is about 11479.1715293396. The cubic root of 131771379 is about 508.8702134089.

The spelling of 131771379 in words is "one hundred thirty-one million, seven hundred seventy-one thousand, three hundred seventy-nine".