13400343 has 16 divisors (see below), whose sum is σ = 21657600. Its totient is φ = 8121240.

The previous prime is 13400341. The next prime is 13400353. The reversal of 13400343 is 34300431.

13400343 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13400343 - 2¹ = 13400341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13400341) 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 15 ways as a sum of consecutive naturals, for example, 22263 + ... + 22856.

It is an arithmetic number, because the mean of its divisors is an integer number (1353600).

Almost surely, 2^13400343 is an apocalyptic number.

13400343 is a deficient number, since it is larger than the sum of its proper divisors (8257257).

13400343 is a wasteful number, since it uses less digits than its factorization.

13400343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45139 (or 45133 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 13400343 is about 3660.6478934746. The cubic root of 13400343 is about 237.5228003965.

Adding to 13400343 its reverse (34300431), we get a palindrome (47700774).

The spelling of 13400343 in words is "thirteen million, four hundred thousand, three hundred forty-three".