1304330243 has 4 divisors (see below), whose sum is σ = 1325712768. Its totient is φ = 1282947720.

The previous prime is 1304330231. The next prime is 1304330249. The reversal of 1304330243 is 3420334031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3420334031 = 26237 ⋅130363.

It is a cyclic number.

It is not a de Polignac number, because 1304330243 - 2¹⁶ = 1304264707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304330249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10691171 + ... + 10691292.

It is an arithmetic number, because the mean of its divisors is an integer number (331428192).

Almost surely, 2^1304330243 is an apocalyptic number.

1304330243 is a deficient number, since it is larger than the sum of its proper divisors (21382525).

1304330243 is an equidigital number, since it uses as much as digits as its factorization.

1304330243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21382524.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 1304330243 is about 36115.5124980942. The cubic root of 1304330243 is about 1092.6033340146.

Adding to 1304330243 its reverse (3420334031), we get a palindrome (4724664274).

The spelling of 1304330243 in words is "one billion, three hundred four million, three hundred thirty thousand, two hundred forty-three".