13021343 has 4 divisors (see below), whose sum is σ = 13060320. Its totient is φ = 12982368.

The previous prime is 13021331. The next prime is 13021357. The reversal of 13021343 is 34312031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13021343 - 2¹² = 13017247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021543) 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, 18983 + ... + 19656.

It is an arithmetic number, because the mean of its divisors is an integer number (3265080).

Almost surely, 2^13021343 is an apocalyptic number.

13021343 is a deficient number, since it is larger than the sum of its proper divisors (38977).

13021343 is an equidigital number, since it uses as much as digits as its factorization.

13021343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38976.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13021343 is about 3608.5098032290. The cubic root of 13021343 is about 235.2620767143.

Adding to 13021343 its reverse (34312031), we get a palindrome (47333374).

The spelling of 13021343 in words is "thirteen million, twenty-one thousand, three hundred forty-three".