13343143421 has 2 divisors, whose sum is σ = 13343143422. Its totient is φ = 13343143420.

The previous prime is 13343143403. The next prime is 13343143459. The reversal of 13343143421 is 12434134331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9319778521 + 4023364900 = 96539^2 + 63430^2 .

It is a cyclic number.

It is not a de Polignac number, because 13343143421 - 2²⁶ = 13276034557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13343143921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6671571710 + 6671571711.

It is an arithmetic number, because the mean of its divisors is an integer number (6671571711).

Almost surely, 2^13343143421 is an apocalyptic number.

It is an amenable number.

13343143421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13343143421 is an equidigital number, since it uses as much as digits as its factorization.

13343143421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 29.

Adding to 13343143421 its reverse (12434134331), we get a palindrome (25777277752).

The spelling of 13343143421 in words is "thirteen billion, three hundred forty-three million, one hundred forty-three thousand, four hundred twenty-one".