131130569 has 4 divisors (see below), whose sum is σ = 131810196. Its totient is φ = 130450944.

The previous prime is 131130529. The next prime is 131130581. The reversal of 131130569 is 965031131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73188025 + 57942544 = 8555^2 + 7612^2 .

It is a cyclic number.

It is not a de Polignac number, because 131130569 - 2⁸ = 131130313 is a prime.

It is a super-2 number, since 2×131130569² = 34390452252527522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131130529) 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, 339524 + ... + 339909.

It is an arithmetic number, because the mean of its divisors is an integer number (32952549).

Almost surely, 2^131130569 is an apocalyptic number.

It is an amenable number.

131130569 is a deficient number, since it is larger than the sum of its proper divisors (679627).

131130569 is an equidigital number, since it uses as much as digits as its factorization.

131130569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679626.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 131130569 is about 11451.2256549245. The cubic root of 131130569 is about 508.0439865708.

The spelling of 131130569 in words is "one hundred thirty-one million, one hundred thirty thousand, five hundred sixty-nine".