1312318 has 16 divisors (see below), whose sum is σ = 2296800. Its totient is φ = 562128.

The previous prime is 1312303. The next prime is 1312319. The reversal of 1312318 is 8132131.

It is a junction number, because it is equal to n+sod(n) for n = 1312295 and 1312304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271 + ... + 1642.

It is an arithmetic number, because the mean of its divisors is an integer number (143550).

2^1312318 is an apocalyptic number.

1312318 is a deficient number, since it is larger than the sum of its proper divisors (984482).

1312318 is an equidigital number, since it uses as much as digits as its factorization.

1312318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936 (or 1922 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1312318 is about 1145.5644896731. The cubic root of 1312318 is about 109.4829174856.

Adding to 1312318 its reverse (8132131), we get a palindrome (9444449).

The spelling of 1312318 in words is "one million, three hundred twelve thousand, three hundred eighteen".