43540002343 has 4 divisors (see below), whose sum is σ = 43542670248. Its totient is φ = 43537334440.

The previous prime is 43540002329. The next prime is 43540002413. The reversal of 43540002343 is 34320004534.

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 43540002343 - 2²⁵ = 43506447911 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 (43540002313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1309321 + ... + 1342162.

It is an arithmetic number, because the mean of its divisors is an integer number (10885667562).

Almost surely, 2^43540002343 is an apocalyptic number.

43540002343 is a deficient number, since it is larger than the sum of its proper divisors (2667905).

43540002343 is a wasteful number, since it uses less digits than its factorization.

43540002343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667904.

The product of its (nonzero) digits is 17280, while the sum is 28.

Adding to 43540002343 its reverse (34320004534), we get a palindrome (77860006877).

The spelling of 43540002343 in words is "forty-three billion, five hundred forty million, two thousand, three hundred forty-three".