131081329 has 8 divisors (see below), whose sum is σ = 135365120. Its totient is φ = 126853776.

The previous prime is 131081317. The next prime is 131081333. The reversal of 131081329 is 923180131.

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 131081329 - 2¹⁷ = 130950257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131081297 and 131081306.

It is not an unprimeable number, because it can be changed into a prime (131081389) 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, 9297 + ... + 18670.

It is an arithmetic number, because the mean of its divisors is an integer number (16920640).

Almost surely, 2^131081329 is an apocalyptic number.

It is an amenable number.

131081329 is a deficient number, since it is larger than the sum of its proper divisors (4283791).

131081329 is a wasteful number, since it uses less digits than its factorization.

131081329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28119.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 131081329 is about 11449.0754648574. The cubic root of 131081329 is about 507.9803878286.

The spelling of 131081329 in words is "one hundred thirty-one million, eighty-one thousand, three hundred twenty-nine".