131520711071 has 4 divisors (see below), whose sum is σ = 131969587512. Its totient is φ = 131071834632.

The previous prime is 131520711031. The next prime is 131520711181. The reversal of 131520711071 is 170117025131.

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 131520711071 - 2¹⁰ = 131520710047 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 (131520711001) 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, 224437781 + ... + 224438366.

It is an arithmetic number, because the mean of its divisors is an integer number (32992396878).

Almost surely, 2^131520711071 is an apocalyptic number.

131520711071 is a deficient number, since it is larger than the sum of its proper divisors (448876441).

131520711071 is an equidigital number, since it uses as much as digits as its factorization.

131520711071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448876440.

The product of its (nonzero) digits is 1470, while the sum is 29.

The spelling of 131520711071 in words is "one hundred thirty-one billion, five hundred twenty million, seven hundred eleven thousand, seventy-one".