1317723 has 16 divisors (see below), whose sum is σ = 1946496. Its totient is φ = 786240.

The previous prime is 1317713. The next prime is 1317727. The reversal of 1317723 is 3277131.

It is not a de Polignac number, because 1317723 - 2⁵ = 1317691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1317693 and 1317702.

It is not an unprimeable number, because it can be changed into a prime (1317727) 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 15 ways as a sum of consecutive naturals, for example, 2136 + ... + 2682.

It is an arithmetic number, because the mean of its divisors is an integer number (121656).

2^1317723 is an apocalyptic number.

1317723 is a deficient number, since it is larger than the sum of its proper divisors (628773).

1317723 is a wasteful number, since it uses less digits than its factorization.

1317723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634.

The product of its digits is 882, while the sum is 24.

The square root of 1317723 is about 1147.9211645405. The cubic root of 1317723 is about 109.6330194702.

The spelling of 1317723 in words is "one million, three hundred seventeen thousand, seven hundred twenty-three".