131391095 has 8 divisors (see below), whose sum is σ = 172002960. Its totient is φ = 95557120.

The previous prime is 131391049. The next prime is 131391149. The reversal of 131391095 is 590193131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131391095 - 2⁸ = 131390839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194410 + ... + 1194519.

It is an arithmetic number, because the mean of its divisors is an integer number (21500370).

Almost surely, 2^131391095 is an apocalyptic number.

131391095 is a deficient number, since it is larger than the sum of its proper divisors (40611865).

131391095 is a wasteful number, since it uses less digits than its factorization.

131391095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388945.

The product of its (nonzero) digits is 3645, while the sum is 32.

The square root of 131391095 is about 11462.5954739753. The cubic root of 131391095 is about 508.3802191517.

The spelling of 131391095 in words is "one hundred thirty-one million, three hundred ninety-one thousand, ninety-five".