1312823 has 2 divisors, whose sum is σ = 1312824. Its totient is φ = 1312822.

The previous prime is 1312813. The next prime is 1312841. The reversal of 1312823 is 3282131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312823 - 2⁸ = 1312567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312795 and 1312804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656411 + 656412.

It is an arithmetic number, because the mean of its divisors is an integer number (656412).

2^1312823 is an apocalyptic number.

1312823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312823 is an equidigital number, since it uses as much as digits as its factorization.

1312823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 1312823 is about 1145.7848838242. The cubic root of 1312823 is about 109.4969592506.

Adding to 1312823 its reverse (3282131), we get a palindrome (4594954).

The spelling of 1312823 in words is "one million, three hundred twelve thousand, eight hundred twenty-three".