131345585 has 8 divisors (see below), whose sum is σ = 180131136. Its totient is φ = 90065520.

The previous prime is 131345581. The next prime is 131345593. The reversal of 131345585 is 585543131.

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

It is not a de Polignac number, because 131345585 - 2² = 131345581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 3752731 = 131345585 / (1 + 3 + 1 + 3 + 4 + 5 + 5 + 8 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131345581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876331 + ... + 1876400.

It is an arithmetic number, because the mean of its divisors is an integer number (22516392).

Almost surely, 2^131345585 is an apocalyptic number.

It is an amenable number.

131345585 is a deficient number, since it is larger than the sum of its proper divisors (48785551).

131345585 is an equidigital number, since it uses as much as digits as its factorization.

131345585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752743.

The product of its digits is 36000, while the sum is 35.

The square root of 131345585 is about 11460.6101495514. The cubic root of 131345585 is about 508.3215164024.

The spelling of 131345585 in words is "one hundred thirty-one million, three hundred forty-five thousand, five hundred eighty-five".