131571 has 16 divisors (see below), whose sum is σ = 213120. Its totient is φ = 79560.

The previous prime is 131561. The next prime is 131581. The reversal of 131571 is 175131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131561) and next prime (131581).

It is not a de Polignac number, because 131571 - 2⁶ = 131507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76 + ... + 518.

It is an arithmetic number, because the mean of its divisors is an integer number (13320).

2¹³¹⁵⁷¹ is an apocalyptic number.

131571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131571 is a deficient number, since it is larger than the sum of its proper divisors (81549).

131571 is a wasteful number, since it uses less digits than its factorization.

131571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 457 counting only the distinct ones).

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

The square root of 131571 is about 362.7271701982. The cubic root of 131571 is about 50.8612143625.

The spelling of 131571 in words is "one hundred thirty-one thousand, five hundred seventy-one".