1316863 has 4 divisors (see below), whose sum is σ = 1327360. Its totient is φ = 1306368.

The previous prime is 1316831. The next prime is 1316869. The reversal of 1316863 is 3686131.

1316863 = 32² + 33² + ... + 158².

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 1316863 - 2⁵ = 1316831 is a prime.

It is a Duffinian number.

1316863 is a lucky number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316869) 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, 5058 + ... + 5311.

It is an arithmetic number, because the mean of its divisors is an integer number (331840).

2^1316863 is an apocalyptic number.

1316863 is a deficient number, since it is larger than the sum of its proper divisors (10497).

1316863 is a wasteful number, since it uses less digits than its factorization.

1316863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10496.

The product of its digits is 2592, while the sum is 28.

The square root of 1316863 is about 1147.5465132185. The cubic root of 1316863 is about 109.6091639468.

It can be divided in two parts, 13168 and 63, that added together give a palindrome (13231).

The spelling of 1316863 in words is "one million, three hundred sixteen thousand, eight hundred sixty-three".