1318312 has 8 divisors (see below), whose sum is σ = 2471850. Its totient is φ = 659152.

The previous prime is 1318301. The next prime is 1318313. The reversal of 1318312 is 2138131.

It can be written as a sum of positive squares in only one way, i.e., 1153476 + 164836 = 1074^2 + 406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1318312.

It is not an unprimeable number, because it can be changed into a prime (1318313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82387 + ... + 82402.

2^1318312 is an apocalyptic number.

It is an amenable number.

1318312 is a deficient number, since it is larger than the sum of its proper divisors (1153538).

1318312 is a wasteful number, since it uses less digits than its factorization.

1318312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164795 (or 164791 counting only the distinct ones).

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

The square root of 1318312 is about 1148.1776865973. The cubic root of 1318312 is about 109.6493517418.

The spelling of 1318312 in words is "one million, three hundred eighteen thousand, three hundred twelve".