1385317 has 4 divisors (see below), whose sum is σ = 1422796. Its totient is φ = 1347840.

The previous prime is 1385303. The next prime is 1385327. The reversal of 1385317 is 7135831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1018081 + 367236 = 1009^2 + 606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1385317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18684 + ... + 18757.

It is an arithmetic number, because the mean of its divisors is an integer number (355699).

2^1385317 is an apocalyptic number.

It is an amenable number.

1385317 is a deficient number, since it is larger than the sum of its proper divisors (37479).

1385317 is an equidigital number, since it uses as much as digits as its factorization.

1385317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37478.

The product of its digits is 2520, while the sum is 28.

The square root of 1385317 is about 1176.9949022829. The cubic root of 1385317 is about 111.4764306325.

The spelling of 1385317 in words is "one million, three hundred eighty-five thousand, three hundred seventeen".