43313921323 has 4 divisors (see below), whose sum is σ = 43317530568. Its totient is φ = 43310312080.

The previous prime is 43313921309. The next prime is 43313921327. The reversal of 43313921323 is 32312931334.

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 43313921323 - 2²⁵ = 43280366891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43313921327) 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, 1786561 + ... + 1810642.

It is an arithmetic number, because the mean of its divisors is an integer number (10829382642).

Almost surely, 2^43313921323 is an apocalyptic number.

43313921323 is a deficient number, since it is larger than the sum of its proper divisors (3609245).

43313921323 is a wasteful number, since it uses less digits than its factorization.

43313921323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609244.

The product of its digits is 34992, while the sum is 34.

The spelling of 43313921323 in words is "forty-three billion, three hundred thirteen million, nine hundred twenty-one thousand, three hundred twenty-three".