1312328 has 16 divisors (see below), whose sum is σ = 2521260. Its totient is φ = 640000.

The previous prime is 1312319. The next prime is 1312331. The reversal of 1312328 is 8232131.

It can be written as a sum of positive squares in 2 ways, for example, as 925444 + 386884 = 962^2 + 622^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673 + ... + 2328.

2^1312328 is an apocalyptic number.

It is an amenable number.

1312328 is a deficient number, since it is larger than the sum of its proper divisors (1208932).

1312328 is a wasteful number, since it uses less digits than its factorization.

1312328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048 (or 4044 counting only the distinct ones).

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

The square root of 1312328 is about 1145.5688543252. The cubic root of 1312328 is about 109.4831955753.

Adding to 1312328 its reverse (8232131), we get a palindrome (9544459).

It can be divided in two parts, 1312 and 328, that multiplied together give a square (430336 = 656²).

The spelling of 1312328 in words is "one million, three hundred twelve thousand, three hundred twenty-eight".