131487071 has 4 divisors (see below), whose sum is σ = 131518272. Its totient is φ = 131455872.

The previous prime is 131487053. The next prime is 131487079. The reversal of 131487071 is 170784131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131487071 - 2⁶ = 131487007 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 (131487079) 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, 8066 + ... + 18111.

It is an arithmetic number, because the mean of its divisors is an integer number (32879568).

Almost surely, 2^131487071 is an apocalyptic number.

131487071 is a deficient number, since it is larger than the sum of its proper divisors (31201).

131487071 is an equidigital number, since it uses as much as digits as its factorization.

131487071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31200.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 131487071 is about 11466.7811961335. The cubic root of 131487071 is about 508.5039729075.

The spelling of 131487071 in words is "one hundred thirty-one million, four hundred eighty-seven thousand, seventy-one".