1312085 has 8 divisors (see below), whose sum is σ = 1580856. Its totient is φ = 1045440.

The previous prime is 1312079. The next prime is 1312093. The reversal of 1312085 is 5802131.

It can be written as a sum of positive squares in 4 ways, for example, as 376996 + 935089 = 614^2 + 967^2 .

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

It is not a de Polignac number, because 1312085 - 2⁸ = 1311829 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent 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, 1655 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (197607).

2^1312085 is an apocalyptic number.

It is an amenable number.

1312085 is a deficient number, since it is larger than the sum of its proper divisors (268771).

1312085 is an equidigital number, since it uses as much as digits as its factorization.

1312085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1312085 is about 1145.4627885706. The cubic root of 1312085 is about 109.4764375954.

The spelling of 1312085 in words is "one million, three hundred twelve thousand, eighty-five".