1312144 has 10 divisors (see below), whose sum is σ = 2542310. Its totient is φ = 656064.

The previous prime is 1312139. The next prime is 1312153. The reversal of 1312144 is 4412131.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 12544 = 1140^2 + 112^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 82009 = 1312144 / (1 + 3 + 1 + 2 + 1 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40989 + ... + 41020.

It is an arithmetic number, because the mean of its divisors is an integer number (254231).

2^1312144 is an apocalyptic number.

It is an amenable number.

1312144 is a deficient number, since it is larger than the sum of its proper divisors (1230166).

1312144 is an equidigital number, since it uses as much as digits as its factorization.

1312144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82017 (or 82011 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 1312144 is about 1145.4885420640. The cubic root of 1312144 is about 109.4780784985.

Adding to 1312144 its reverse (4412131), we get a palindrome (5724275).

The spelling of 1312144 in words is "one million, three hundred twelve thousand, one hundred forty-four".