1317813 has 8 divisors (see below), whose sum is σ = 2008128. Its totient is φ = 753024.

The previous prime is 1317793. The next prime is 1317817. The reversal of 1317813 is 3187131.

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

It is not a de Polignac number, because 1317813 - 2⁹ = 1317301 is a prime.

It is a super-2 number, since 2×1317813² = 3473262205938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31356 + ... + 31397.

It is an arithmetic number, because the mean of its divisors is an integer number (251016).

2^1317813 is an apocalyptic number.

It is an amenable number.

1317813 is a deficient number, since it is larger than the sum of its proper divisors (690315).

1317813 is an equidigital number, since it uses as much as digits as its factorization.

1317813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62763.

The product of its digits is 504, while the sum is 24.

The square root of 1317813 is about 1147.9603651695. The cubic root of 1317813 is about 109.6355153785.

The spelling of 1317813 in words is "one million, three hundred seventeen thousand, eight hundred thirteen".