1321342304 has 12 divisors (see below), whose sum is σ = 2601392724. Its totient is φ = 660671136.

The previous prime is 1321342259. The next prime is 1321342361. The reversal of 1321342304 is 4032431231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321342304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20645942 + ... + 20646005.

It is an arithmetic number, because the mean of its divisors is an integer number (216782727).

Almost surely, 2^1321342304 is an apocalyptic number.

It is an amenable number.

1321342304 is a deficient number, since it is larger than the sum of its proper divisors (1280050420).

1321342304 is an equidigital number, since it uses as much as digits as its factorization.

1321342304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41291957 (or 41291949 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1321342304 is about 36350.2724061320. The cubic root of 1321342304 is about 1097.3330167302. Note that the first 3 decimals are identical.

Adding to 1321342304 its reverse (4032431231), we get a palindrome (5353773535).

The spelling of 1321342304 in words is "one billion, three hundred twenty-one million, three hundred forty-two thousand, three hundred four".