131298169 has 4 divisors (see below), whose sum is σ = 133450660. Its totient is φ = 129145680.

The previous prime is 131298161. The next prime is 131298173. The reversal of 131298169 is 961892131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961892131 = 23 ⋅41821397.

It can be written as a sum of positive squares in 2 ways, for example, as 37982569 + 93315600 = 6163^2 + 9660^2 .

It is a cyclic number.

It is not a de Polignac number, because 131298169 - 2³ = 131298161 is a prime.

It is a super-2 number, since 2×131298169² = 34478418365505122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131298161) 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, 1076154 + ... + 1076275.

It is an arithmetic number, because the mean of its divisors is an integer number (33362665).

Almost surely, 2^131298169 is an apocalyptic number.

It is an amenable number.

131298169 is a deficient number, since it is larger than the sum of its proper divisors (2152491).

131298169 is an equidigital number, since it uses as much as digits as its factorization.

131298169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152490.

The product of its digits is 23328, while the sum is 40.

The square root of 131298169 is about 11458.5413120519. The cubic root of 131298169 is about 508.2603407033.

The spelling of 131298169 in words is "one hundred thirty-one million, two hundred ninety-eight thousand, one hundred sixty-nine".