1321301304 has 48 divisors (see below), whose sum is σ = 3613287600. Its totient is φ = 436155264.

The previous prime is 1321301299. The next prime is 1321301321. The reversal of 1321301304 is 4031031231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81669 + ... + 96500.

It is an arithmetic number, because the mean of its divisors is an integer number (75276825).

Almost surely, 2^1321301304 is an apocalyptic number.

It is an amenable number.

1321301304 is an abundant number, since it is smaller than the sum of its proper divisors (2291986296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321301304 is a wasteful number, since it uses less digits than its factorization.

1321301304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178284 (or 178277 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1321301304 is about 36349.7084444979. The cubic root of 1321301304 is about 1097.3216668781.

Adding to 1321301304 its reverse (4031031231), we get a palindrome (5352332535).

The spelling of 1321301304 in words is "one billion, three hundred twenty-one million, three hundred one thousand, three hundred four".