131343169 has 4 divisors (see below), whose sum is σ = 133821396. Its totient is φ = 128864944.

The previous prime is 131343161. The next prime is 131343211. The reversal of 131343169 is 961343131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118526769 + 12816400 = 10887^2 + 3580^2 .

It is a cyclic number.

It is not a de Polignac number, because 131343169 - 2³ = 131343161 is a prime.

It is a super-2 number, since 2×131343169² = 34502056085925122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131343169.

It is not an unprimeable number, because it can be changed into a prime (131343161) 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, 1239034 + ... + 1239139.

It is an arithmetic number, because the mean of its divisors is an integer number (33455349).

Almost surely, 2^131343169 is an apocalyptic number.

It is an amenable number.

131343169 is a deficient number, since it is larger than the sum of its proper divisors (2478227).

131343169 is an equidigital number, since it uses as much as digits as its factorization.

131343169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478226.

The product of its digits is 5832, while the sum is 31.

The square root of 131343169 is about 11460.5047445564. The cubic root of 131343169 is about 508.3183996568.

The spelling of 131343169 in words is "one hundred thirty-one million, three hundred forty-three thousand, one hundred sixty-nine".