1321133304 has 16 divisors (see below), whose sum is σ = 3302833320. Its totient is φ = 440377760.

The previous prime is 1321133273. The next prime is 1321133371. The reversal of 1321133304 is 4033311231.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 27523587 + ... + 27523634.

Almost surely, 2^1321133304 is an apocalyptic number.

It is an amenable number.

1321133304 is an abundant number, since it is smaller than the sum of its proper divisors (1981700016).

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

1321133304 is a wasteful number, since it uses less digits than its factorization.

1321133304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55047230 (or 55047226 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1321133304 is about 36347.3974859274. The cubic root of 1321133304 is about 1097.2751577149.

Adding to 1321133304 its reverse (4033311231), we get a palindrome (5354444535).

The spelling of 1321133304 in words is "one billion, three hundred twenty-one million, one hundred thirty-three thousand, three hundred four".