1304320312 has 32 divisors (see below), whose sum is σ = 2521958400. Its totient is φ = 632068704.

The previous prime is 1304320309. The next prime is 1304320313. The reversal of 1304320312 is 2130234031.

It is a self number, because there is not a number n which added to its sum of digits gives 1304320312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304320313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21889 + ... + 55567.

It is an arithmetic number, because the mean of its divisors is an integer number (78811200).

Almost surely, 2^1304320312 is an apocalyptic number.

It is an amenable number.

1304320312 is a deficient number, since it is larger than the sum of its proper divisors (1217638088).

1304320312 is a wasteful number, since it uses less digits than its factorization.

1304320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33835 (or 33831 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1304320312 is about 36115.3750084365. The cubic root of 1304320312 is about 1092.6005610279.

Adding to 1304320312 its reverse (2130234031), we get a palindrome (3434554343).

The spelling of 1304320312 in words is "one billion, three hundred four million, three hundred twenty thousand, three hundred twelve".