1317523 has 2 divisors, whose sum is σ = 1317524. Its totient is φ = 1317522.

The previous prime is 1317521. The next prime is 1317541. The reversal of 1317523 is 3257131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1317523 - 2¹ = 1317521 is a prime.

Together with 1317521, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1317494 and 1317503.

It is not a weakly prime, because it can be changed into another prime (1317521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658761 + 658762.

It is an arithmetic number, because the mean of its divisors is an integer number (658762).

2^1317523 is an apocalyptic number.

1317523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317523 is an equidigital number, since it uses as much as digits as its factorization.

1317523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630, while the sum is 22.

The square root of 1317523 is about 1147.8340472385. The cubic root of 1317523 is about 109.6274726005.

The spelling of 1317523 in words is "one million, three hundred seventeen thousand, five hundred twenty-three".