131771329 has 8 divisors (see below), whose sum is σ = 133050632. Its totient is φ = 130498560.

The previous prime is 131771323. The next prime is 131771333. The reversal of 131771329 is 923177131.

It can be written as a sum of positive squares in 4 ways, for example, as 14265729 + 117505600 = 3777^2 + 10840^2 .

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 131771329 - 2⁷ = 131771201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131771294 and 131771303.

It is not an unprimeable number, because it can be changed into a prime (131771323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45097 + ... + 47929.

It is an arithmetic number, because the mean of its divisors is an integer number (16631329).

Almost surely, 2^131771329 is an apocalyptic number.

It is an amenable number.

131771329 is a deficient number, since it is larger than the sum of its proper divisors (1279303).

131771329 is a wasteful number, since it uses less digits than its factorization.

131771329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267.

The product of its digits is 7938, while the sum is 34.

The square root of 131771329 is about 11479.1693514818. The cubic root of 131771329 is about 508.8701490461.

The spelling of 131771329 in words is "one hundred thirty-one million, seven hundred seventy-one thousand, three hundred twenty-nine".