1312863 has 16 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 819104.

The previous prime is 1312853. The next prime is 1312867. The reversal of 1312863 is 3682131.

It is a cyclic number.

It is not a de Polignac number, because 1312863 - 2⁴ = 1312847 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3478 + ... + 3836.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

2^1312863 is an apocalyptic number.

1312863 is a deficient number, since it is larger than the sum of its proper divisors (553377).

1312863 is a wasteful number, since it uses less digits than its factorization.

1312863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its digits is 864, while the sum is 24.

The square root of 1312863 is about 1145.8023389747. The cubic root of 1312863 is about 109.4980713157.

Adding to 1312863 its reverse (3682131), we get a palindrome (4994994).

The spelling of 1312863 in words is "one million, three hundred twelve thousand, eight hundred sixty-three".