131871527 has 4 divisors (see below), whose sum is σ = 131961000. Its totient is φ = 131782056.

The previous prime is 131871469. The next prime is 131871547. The reversal of 131871527 is 725178131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 725178131 = 73 ⋅9933947.

It is a cyclic number.

It is not a de Polignac number, because 131871527 - 2¹⁰ = 131870503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131871547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42488 + ... + 45485.

It is an arithmetic number, because the mean of its divisors is an integer number (32990250).

Almost surely, 2^131871527 is an apocalyptic number.

131871527 is a deficient number, since it is larger than the sum of its proper divisors (89473).

131871527 is an equidigital number, since it uses as much as digits as its factorization.

131871527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89472.

The product of its digits is 11760, while the sum is 35.

The square root of 131871527 is about 11483.5328623207. The cubic root of 131871527 is about 508.9990968060. Note that the first 3 decimals are identical.

The spelling of 131871527 in words is "one hundred thirty-one million, eight hundred seventy-one thousand, five hundred twenty-seven".