1321041304 has 32 divisors (see below), whose sum is σ = 2861082000. Its totient is φ = 565150720.

The previous prime is 1321041299. The next prime is 1321041307. The reversal of 1321041304 is 4031401231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321041307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440029 + ... + 443020.

Almost surely, 2^1321041304 is an apocalyptic number.

It is an amenable number.

1321041304 is an abundant number, since it is smaller than the sum of its proper divisors (1540040696).

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

1321041304 is a wasteful number, since it uses less digits than its factorization.

1321041304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883083 (or 883079 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1321041304 is about 36346.1318987317. The cubic root of 1321041304 is about 1097.2496867405.

Adding to 1321041304 its reverse (4031401231), we get a palindrome (5352442535).

The spelling of 1321041304 in words is "one billion, three hundred twenty-one million, forty-one thousand, three hundred four".