131000571 has 56 divisors (see below), whose sum is σ = 221083296. Its totient is φ = 76982400.

The previous prime is 131000557. The next prime is 131000581. The reversal of 131000571 is 175000131.

It is a happy number.

It is not a de Polignac number, because 131000571 - 2⁵ = 131000539 is a prime.

It is a super-2 number, since 2×131000571² = 34322299204652082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131000531) 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 55 ways as a sum of consecutive naturals, for example, 217671 + ... + 218271.

It is an arithmetic number, because the mean of its divisors is an integer number (3947916).

Almost surely, 2^131000571 is an apocalyptic number.

131000571 is a deficient number, since it is larger than the sum of its proper divisors (90082725).

131000571 is an equidigital number, since it uses as much as digits as its factorization.

131000571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 105, while the sum is 18.

The square root of 131000571 is about 11445.5480864832. The cubic root of 131000571 is about 507.8760457175.

The spelling of 131000571 in words is "one hundred thirty-one million, five hundred seventy-one", and thus it is an aban number.