1312518 has 16 divisors (see below), whose sum is σ = 2739456. Its totient is φ = 418440.

The previous prime is 1312517. The next prime is 1312523. The reversal of 1312518 is 8152131.

It is a junction number, because it is equal to n+sod(n) for n = 1312494 and 1312503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4618 + ... + 4893.

It is an arithmetic number, because the mean of its divisors is an integer number (171216).

2^1312518 is an apocalyptic number.

1312518 is an abundant number, since it is smaller than the sum of its proper divisors (1426938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312518 is a wasteful number, since it uses less digits than its factorization.

1312518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9539.

The product of its digits is 240, while the sum is 21.

The square root of 1312518 is about 1145.6517795561. The cubic root of 1312518 is about 109.4884790114.

Adding to 1312518 its reverse (8152131), we get a palindrome (9464649).

It can be divided in two parts, 1312 and 518, that added together give a triangular number (1830 = T₆₀).

The spelling of 1312518 in words is "one million, three hundred twelve thousand, five hundred eighteen".