1312004 has 12 divisors (see below), whose sum is σ = 2307228. Its totient is φ = 652800.

The previous prime is 1312001. The next prime is 1312019. The reversal of 1312004 is 4002131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 592900 + 719104 = 770^2 + 848^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284 + ... + 1644.

It is an arithmetic number, because the mean of its divisors is an integer number (192269).

2^1312004 is an apocalyptic number.

It is an amenable number.

1312004 is a deficient number, since it is larger than the sum of its proper divisors (995224).

1312004 is a wasteful number, since it uses less digits than its factorization.

1312004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1312004 is about 1145.4274311365. The cubic root of 1312004 is about 109.4741847500.

Adding to 1312004 its reverse (4002131), we get a palindrome (5314135).

It can be divided in two parts, 131200 and 4, that multiplied together give a triangular number (524800 = T₁₀₂₄).

The spelling of 1312004 in words is "one million, three hundred twelve thousand, four".