131130165 has 8 divisors (see below), whose sum is σ = 209808288. Its totient is φ = 69936080.

The previous prime is 131130127. The next prime is 131130169. The reversal of 131130165 is 561031131.

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

It is not a de Polignac number, because 131130165 - 2⁶ = 131130101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131130169) 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, 4370991 + ... + 4371020.

It is an arithmetic number, because the mean of its divisors is an integer number (26226036).

Almost surely, 2^131130165 is an apocalyptic number.

131130165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131130165 is a deficient number, since it is larger than the sum of its proper divisors (78678123).

131130165 is an equidigital number, since it uses as much as digits as its factorization.

131130165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8742019.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 131130165 is about 11451.2080148777. The cubic root of 131130165 is about 508.0434648263.

Adding to 131130165 its reverse (561031131), we get a palindrome (692161296).

The spelling of 131130165 in words is "one hundred thirty-one million, one hundred thirty thousand, one hundred sixty-five".