1321430204 has 12 divisors (see below), whose sum is σ = 2313627624. Its totient is φ = 660393744.

The previous prime is 1321430177. The next prime is 1321430261. The reversal of 1321430204 is 4020341231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70967 + ... + 87630.

It is an arithmetic number, because the mean of its divisors is an integer number (192802302).

Almost surely, 2^1321430204 is an apocalyptic number.

It is an amenable number.

1321430204 is a deficient number, since it is larger than the sum of its proper divisors (992197420).

1321430204 is a wasteful number, since it uses less digits than its factorization.

1321430204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160684 (or 160682 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1321430204 is about 36351.4814553685. The cubic root of 1321430204 is about 1097.3573489145.

Adding to 1321430204 its reverse (4020341231), we get a palindrome (5341771435).

The spelling of 1321430204 in words is "one billion, three hundred twenty-one million, four hundred thirty thousand, two hundred four".