131047569 has 12 divisors (see below), whose sum is σ = 190967556. Its totient is φ = 86591232.

The previous prime is 131047561. The next prime is 131047573. The reversal of 131047569 is 965740131.

It can be written as a sum of positive squares in 2 ways, for example, as 43718544 + 87329025 = 6612^2 + 9345^2 .

It is not a de Polignac number, because 131047569 - 2³ = 131047561 is a prime.

It is a super-2 number, since 2×131047569² = 34346930681619522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131047561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63412 + ... + 65445.

It is an arithmetic number, because the mean of its divisors is an integer number (15913963).

Almost surely, 2^131047569 is an apocalyptic number.

It is an amenable number.

131047569 is a deficient number, since it is larger than the sum of its proper divisors (59919987).

131047569 is a wasteful number, since it uses less digits than its factorization.

131047569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128976 (or 128973 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 131047569 is about 11447.6010150599. The cubic root of 131047569 is about 507.9367739631.

The spelling of 131047569 in words is "one hundred thirty-one million, forty-seven thousand, five hundred sixty-nine".