13040343 has 24 divisors (see below), whose sum is σ = 20638800. Its totient is φ = 7897344.

The previous prime is 13040341. The next prime is 13040347. The reversal of 13040343 is 34304031.

It is not a de Polignac number, because 13040343 - 2¹ = 13040341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2968 + ... + 5906.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^13040343 is an apocalyptic number.

13040343 is a deficient number, since it is larger than the sum of its proper divisors (7598457).

13040343 is a wasteful number, since it uses less digits than its factorization.

13040343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991 (or 2988 counting only the distinct ones).

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

The square root of 13040343 is about 3611.1415092738. The cubic root of 13040343 is about 235.3764480994.

Adding to 13040343 its reverse (34304031), we get a palindrome (47344374).

The spelling of 13040343 in words is "thirteen million, forty thousand, three hundred forty-three".