131316569 has 4 divisors (see below), whose sum is σ = 131343744. Its totient is φ = 131289396.

The previous prime is 131316557. The next prime is 131316593. The reversal of 131316569 is 965613131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131316569 is a prime.

It is a super-2 number, since 2×131316569² = 34488082587863522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131346569) 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, 4157 + ... + 16730.

It is an arithmetic number, because the mean of its divisors is an integer number (32835936).

Almost surely, 2^131316569 is an apocalyptic number.

It is an amenable number.

131316569 is a deficient number, since it is larger than the sum of its proper divisors (27175).

131316569 is an equidigital number, since it uses as much as digits as its factorization.

131316569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27174.

The product of its digits is 14580, while the sum is 35.

The square root of 131316569 is about 11459.3441784423. The cubic root of 131316569 is about 508.2840819672.

The spelling of 131316569 in words is "one hundred thirty-one million, three hundred sixteen thousand, five hundred sixty-nine".