40013343 has 24 divisors (see below), whose sum is σ = 60078720. Its totient is φ = 25634880.

The previous prime is 40013341. The next prime is 40013371. The reversal of 40013343 is 34331004.

40013343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40013343 - 2¹ = 40013341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013341) 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 23 ways as a sum of consecutive naturals, for example, 47853 + ... + 48681.

It is an arithmetic number, because the mean of its divisors is an integer number (2503280).

Almost surely, 2^40013343 is an apocalyptic number.

40013343 is a deficient number, since it is larger than the sum of its proper divisors (20065377).

40013343 is a wasteful number, since it uses less digits than its factorization.

40013343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1036 counting only the distinct ones).

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

The square root of 40013343 is about 6325.6100891535. The cubic root of 40013343 is about 342.0332121229.

Adding to 40013343 its reverse (34331004), we get a palindrome (74344347).

The spelling of 40013343 in words is "forty million, thirteen thousand, three hundred forty-three".