1317285 has 24 divisors (see below), whose sum is σ = 2320344. Its totient is φ = 691200.

The previous prime is 1317271. The next prime is 1317299. The reversal of 1317285 is 5827131.

It is an interprime number because it is at equal distance from previous prime (1317271) and next prime (1317299).

It can be written as a sum of positive squares in 4 ways, for example, as 544644 + 772641 = 738^2 + 879^2 .

It is not a de Polignac number, because 1317285 - 2⁷ = 1317157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3085 + ... + 3485.

It is an arithmetic number, because the mean of its divisors is an integer number (96681).

2^1317285 is an apocalyptic number.

1317285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1317285 is a deficient number, since it is larger than the sum of its proper divisors (1003059).

1317285 is a wasteful number, since it uses less digits than its factorization.

1317285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 482 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1317285 is about 1147.7303690327. The cubic root of 1317285 is about 109.6208710941.

The spelling of 1317285 in words is "one million, three hundred seventeen thousand, two hundred eighty-five".