1331185 has 8 divisors (see below), whose sum is σ = 1691496. Its totient is φ = 1002240.

The previous prime is 1331153. The next prime is 1331207. The reversal of 1331185 is 5811331.

It can be written as a sum of positive squares in 4 ways, for example, as 703921 + 627264 = 839^2 + 792^2 .

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

It is not a de Polignac number, because 1331185 - 2⁵ = 1331153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7746 + ... + 7915.

It is an arithmetic number, because the mean of its divisors is an integer number (211437).

2^1331185 is an apocalyptic number.

It is an amenable number.

1331185 is a deficient number, since it is larger than the sum of its proper divisors (360311).

1331185 is a wasteful number, since it uses less digits than its factorization.

1331185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15683.

The product of its digits is 360, while the sum is 22.

The square root of 1331185 is about 1153.7699077372. The cubic root of 1331185 is about 110.0050961826.

The spelling of 1331185 in words is "one million, three hundred thirty-one thousand, one hundred eighty-five".