131391829671 has 4 divisors (see below), whose sum is σ = 175189106232. Its totient is φ = 87594553112.

The previous prime is 131391829651. The next prime is 131391829687. The reversal of 131391829671 is 176928193131.

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 131391829671 - 2¹³ = 131391821479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131391829631) 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, 21898638276 + ... + 21898638281.

It is an arithmetic number, because the mean of its divisors is an integer number (43797276558).

Almost surely, 2^131391829671 is an apocalyptic number.

131391829671 is a deficient number, since it is larger than the sum of its proper divisors (43797276561).

131391829671 is an equidigital number, since it uses as much as digits as its factorization.

131391829671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43797276560.

The product of its digits is 489888, while the sum is 51.

The spelling of 131391829671 in words is "one hundred thirty-one billion, three hundred ninety-one million, eight hundred twenty-nine thousand, six hundred seventy-one".