1312185 has 16 divisors (see below), whose sum is σ = 2399616. Its totient is φ = 599808.

The previous prime is 1312183. The next prime is 1312187. The reversal of 1312185 is 5812131.

It is an interprime number because it is at equal distance from previous prime (1312183) and next prime (1312187).

It is not a de Polignac number, because 1312185 - 2¹ = 1312183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1312183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6144 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (149976).

2^1312185 is an apocalyptic number.

1312185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312185 is a deficient number, since it is larger than the sum of its proper divisors (1087431).

1312185 is a wasteful number, since it uses less digits than its factorization.

1312185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12512.

The product of its digits is 240, while the sum is 21.

The square root of 1312185 is about 1145.5064382185. The cubic root of 1312185 is about 109.4792187581.

The spelling of 1312185 in words is "one million, three hundred twelve thousand, one hundred eighty-five".