1304143331021 has 2 divisors, whose sum is σ = 1304143331022. Its totient is φ = 1304143331020.

The previous prime is 1304143330957. The next prime is 1304143331077. The reversal of 1304143331021 is 1201333414031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129945614121 + 174197716900 = 1062989^2 + 417370^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304143331021 - 2⁶ = 1304143330957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1304143331221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652071665510 + 652071665511.

It is an arithmetic number, because the mean of its divisors is an integer number (652071665511).

Almost surely, 2^{1304143331021} is an apocalyptic number.

It is an amenable number.

1304143331021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304143331021 is an equidigital number, since it uses as much as digits as its factorization.

1304143331021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 1304143331021 its reverse (1201333414031), we get a palindrome (2505476745052).

The spelling of 1304143331021 in words is "one trillion, three hundred four billion, one hundred forty-three million, three hundred thirty-one thousand, twenty-one".