1317263 has 4 divisors (see below), whose sum is σ = 1335888. Its totient is φ = 1298640.

The previous prime is 1317259. The next prime is 1317271. The reversal of 1317263 is 3627131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1317263 - 2² = 1317259 is a prime.

It is a super-2 number, since 2×1317263² = 3470363622338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317223) 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, 9206 + ... + 9347.

It is an arithmetic number, because the mean of its divisors is an integer number (333972).

2^1317263 is an apocalyptic number.

1317263 is a deficient number, since it is larger than the sum of its proper divisors (18625).

1317263 is an equidigital number, since it uses as much as digits as its factorization.

1317263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18624.

The product of its digits is 756, while the sum is 23.

The square root of 1317263 is about 1147.7207848602. The cubic root of 1317263 is about 109.6202608307.

The spelling of 1317263 in words is "one million, three hundred seventeen thousand, two hundred sixty-three".