131797765 has 8 divisors (see below), whose sum is σ = 172535328. Its totient is φ = 95852880.

The previous prime is 131797747. The next prime is 131797769. The reversal of 131797765 is 567797131.

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

It is a de Polignac number, because none of the positive numbers 2^k-131797765 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 (131797769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198107 + ... + 1198216.

It is an arithmetic number, because the mean of its divisors is an integer number (21566916).

Almost surely, 2^131797765 is an apocalyptic number.

It is an amenable number.

131797765 is a deficient number, since it is larger than the sum of its proper divisors (40737563).

131797765 is a wasteful number, since it uses less digits than its factorization.

131797765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396339.

The product of its digits is 277830, while the sum is 46.

The square root of 131797765 is about 11480.3207707799. The cubic root of 131797765 is about 508.9041766601.

The spelling of 131797765 in words is "one hundred thirty-one million, seven hundred ninety-seven thousand, seven hundred sixty-five".