1304311828 has 6 divisors (see below), whose sum is σ = 2282545706. Its totient is φ = 652155912.

The previous prime is 1304311823. The next prime is 1304311831. The reversal of 1304311828 is 8281134031.

It can be written as a sum of positive squares in only one way, i.e., 1061326084 + 242985744 = 32578^2 + 15588^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1304311828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304311823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163038975 + ... + 163038982.

Almost surely, 2^1304311828 is an apocalyptic number.

It is an amenable number.

1304311828 is a deficient number, since it is larger than the sum of its proper divisors (978233878).

1304311828 is a wasteful number, since it uses less digits than its factorization.

1304311828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326077961 (or 326077959 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1304311828 is about 36115.2575513452. The cubic root of 1304311828 is about 1092.5981920691.

Adding to 1304311828 its reverse (8281134031), we get a palindrome (9585445859).

The spelling of 1304311828 in words is "one billion, three hundred four million, three hundred eleven thousand, eight hundred twenty-eight".