1321103304 has 32 divisors (see below), whose sum is σ = 3669732000. Its totient is φ = 440367696.

The previous prime is 1321103297. The next prime is 1321103309. The reversal of 1321103304 is 4033011231.

1321103304 is a `hidden beast` number, since 1 + 321 + 10 + 330 + 4 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1321103309) 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, 3057894 + ... + 3058325.

It is an arithmetic number, because the mean of its divisors is an integer number (114679125).

Almost surely, 2^1321103304 is an apocalyptic number.

It is an amenable number.

1321103304 is an abundant number, since it is smaller than the sum of its proper divisors (2348628696).

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

1321103304 is a wasteful number, since it uses less digits than its factorization.

1321103304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116234 (or 6116224 counting only the distinct ones).

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

The square root of 1321103304 is about 36346.9847992925. The cubic root of 1321103304 is about 1097.2668520923.

Adding to 1321103304 its reverse (4033011231), we get a palindrome (5354114535).

The spelling of 1321103304 in words is "one billion, three hundred twenty-one million, one hundred three thousand, three hundred four".