1311304 has 16 divisors (see below), whose sum is σ = 2588400. Its totient is φ = 621072.

The previous prime is 1311301. The next prime is 1311307. The reversal of 1311304 is 4031131.

It is an interprime number because it is at equal distance from previous prime (1311301) and next prime (1311307).

It is not an unprimeable number, because it can be changed into a prime (1311301) 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, 4162 + ... + 4465.

It is an arithmetic number, because the mean of its divisors is an integer number (161775).

2^1311304 is an apocalyptic number.

It is an amenable number.

1311304 is a deficient number, since it is larger than the sum of its proper divisors (1277096).

1311304 is a wasteful number, since it uses less digits than its factorization.

1311304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8652 (or 8648 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1311304 is about 1145.1218275799. The cubic root of 1311304 is about 109.4547118515.

Adding to 1311304 its reverse (4031131), we get a palindrome (5342435).

The spelling of 1311304 in words is "one million, three hundred eleven thousand, three hundred four".