131317569 has 24 divisors (see below), whose sum is σ = 201558240. Its totient is φ = 82150848.

The previous prime is 131317561. The next prime is 131317591. The reversal of 131317569 is 965713131.

It is not a de Polignac number, because 131317569 - 2³ = 131317561 is a prime.

It is a super-2 number, since 2×131317569² = 34488607856139522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131317561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14709 + ... + 21885.

It is an arithmetic number, because the mean of its divisors is an integer number (8398260).

Almost surely, 2^131317569 is an apocalyptic number.

131317569 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

131317569 is a deficient number, since it is larger than the sum of its proper divisors (70240671).

131317569 is a wasteful number, since it uses less digits than its factorization.

131317569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7309 (or 7306 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 131317569 is about 11459.3878108737. The cubic root of 131317569 is about 508.2853721898.

The spelling of 131317569 in words is "one hundred thirty-one million, three hundred seventeen thousand, five hundred sixty-nine".