131001329 has 4 divisors (see below), whose sum is σ = 131733360. Its totient is φ = 130269300.

The previous prime is 131001317. The next prime is 131001331. The reversal of 131001329 is 923100131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131001329 is a prime.

It is a super-2 number, since 2×131001329² = 34322696399532482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131001329.

It is not an unprimeable number, because it can be changed into a prime (131001359) 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 3 ways as a sum of consecutive naturals, for example, 365747 + ... + 366104.

It is an arithmetic number, because the mean of its divisors is an integer number (32933340).

Almost surely, 2^131001329 is an apocalyptic number.

It is an amenable number.

131001329 is a deficient number, since it is larger than the sum of its proper divisors (732031).

131001329 is an equidigital number, since it uses as much as digits as its factorization.

131001329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732030.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 131001329 is about 11445.5811997469. The cubic root of 131001329 is about 507.8770252789.

The spelling of 131001329 in words is "one hundred thirty-one million, one thousand, three hundred twenty-nine".