1321204434304 has 32 divisors (see below), whose sum is σ = 2633057826840. Its totient is φ = 660358548480.

The previous prime is 1321204434271. The next prime is 1321204434331. The reversal of 1321204434304 is 4034344021231.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555042 + ... + 2249569.

Almost surely, 2^{1321204434304} is an apocalyptic number.

It is an amenable number.

1321204434304 is a deficient number, since it is larger than the sum of its proper divisors (1311853392536).

1321204434304 is an equidigital number, since it uses as much as digits as its factorization.

1321204434304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807338 (or 3807326 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 1321204434304 its reverse (4034344021231), we get a palindrome (5355548455535).

The spelling of 1321204434304 in words is "one trillion, three hundred twenty-one billion, two hundred four million, four hundred thirty-four thousand, three hundred four".