13021343441 has 4 divisors (see below), whose sum is σ = 13587488832. Its totient is φ = 12455198052.

The previous prime is 13021343431. The next prime is 13021343449. The reversal of 13021343441 is 14434312031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13021343441 - 2¹⁰ = 13021342417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13021343441.

It is not an unprimeable number, because it can be changed into a prime (13021343449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283072661 + ... + 283072706.

It is an arithmetic number, because the mean of its divisors is an integer number (3396872208).

Almost surely, 2^13021343441 is an apocalyptic number.

It is an amenable number.

13021343441 is a deficient number, since it is larger than the sum of its proper divisors (566145391).

13021343441 is an equidigital number, since it uses as much as digits as its factorization.

13021343441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566145390.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 13021343441 its reverse (14434312031), we get a palindrome (27455655472).

The spelling of 13021343441 in words is "thirteen billion, twenty-one million, three hundred forty-three thousand, four hundred forty-one".