131120569 has 8 divisors (see below), whose sum is σ = 134826120. Its totient is φ = 127460736.

The previous prime is 131120557. The next prime is 131120573. The reversal of 131120569 is 965021131.

It can be written as a sum of positive squares in 4 ways, for example, as 7354944 + 123765625 = 2712^2 + 11125^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 131120569 - 2¹¹ = 131118521 is a prime.

It is a super-2 number, since 2×131120569² = 34385207229767522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131120519) 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 7 ways as a sum of consecutive naturals, for example, 5572 + ... + 17125.

It is an arithmetic number, because the mean of its divisors is an integer number (16853265).

Almost surely, 2^131120569 is an apocalyptic number.

It is an amenable number.

131120569 is a deficient number, since it is larger than the sum of its proper divisors (3705551).

131120569 is a wasteful number, since it uses less digits than its factorization.

131120569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22859.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 131120569 is about 11450.7890121162. The cubic root of 131120569 is about 508.0310717866.

The spelling of 131120569 in words is "one hundred thirty-one million, one hundred twenty thousand, five hundred sixty-nine".