131300609 has 12 divisors (see below), whose sum is σ = 146696340. Its totient is φ = 117400800.

The previous prime is 131300569. The next prime is 131300627. The reversal of 131300609 is 906003131.

It can be written as a sum of positive squares in 2 ways, for example, as 67699984 + 63600625 = 8228^2 + 7975^2 .

It is not a de Polignac number, because 131300609 - 2¹² = 131296513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131300699) 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, 1514 + ... + 16275.

It is an arithmetic number, because the mean of its divisors is an integer number (12224695).

Almost surely, 2^131300609 is an apocalyptic number.

It is an amenable number.

131300609 is a deficient number, since it is larger than the sum of its proper divisors (15395731).

131300609 is a wasteful number, since it uses less digits than its factorization.

131300609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17872 (or 17861 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 131300609 is about 11458.6477823520. The cubic root of 131300609 is about 508.2634891289.

The spelling of 131300609 in words is "one hundred thirty-one million, three hundred thousand, six hundred nine".