1312394 has 16 divisors (see below), whose sum is σ = 2037960. Its totient is φ = 633600.

The previous prime is 1312393. The next prime is 1312397. The reversal of 1312394 is 4932131.

It can be written as a sum of positive squares in 4 ways, for example, as 1243225 + 69169 = 1115^2 + 263^2 .

It is a super-2 number, since 2×1312394² = 3444756022472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312391) 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, 12944 + ... + 13044.

2^1312394 is an apocalyptic number.

1312394 is a deficient number, since it is larger than the sum of its proper divisors (725566).

1312394 is a wasteful number, since it uses less digits than its factorization.

1312394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265.

The product of its digits is 648, while the sum is 23.

The square root of 1312394 is about 1145.5976606121. The cubic root of 1312394 is about 109.4850309319.

The spelling of 1312394 in words is "one million, three hundred twelve thousand, three hundred ninety-four".