43000321343 has 4 divisors (see below), whose sum is σ = 49143224400. Its totient is φ = 36857418288.

The previous prime is 43000321327. The next prime is 43000321381. The reversal of 43000321343 is 34312300034.

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 43000321343 - 2⁴ = 43000321327 is a prime.

It is a super-2 number, since 2×43000321343² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43000321313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3071451518 + ... + 3071451531.

It is an arithmetic number, because the mean of its divisors is an integer number (12285806100).

Almost surely, 2^43000321343 is an apocalyptic number.

43000321343 is a deficient number, since it is larger than the sum of its proper divisors (6142903057).

43000321343 is an equidigital number, since it uses as much as digits as its factorization.

43000321343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6142903056.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 43000321343 its reverse (34312300034), we get a palindrome (77312621377).

The spelling of 43000321343 in words is "forty-three billion, three hundred twenty-one thousand, three hundred forty-three".