43323013421 has 4 divisors (see below), whose sum is σ = 44244779712. Its totient is φ = 42401247132.

The previous prime is 43323013379. The next prime is 43323013499. The reversal of 43323013421 is 12431032334.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43323013421 is a prime.

It is a super-2 number, since 2×43323013421² (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 (43323013121) 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, 460883075 + ... + 460883168.

It is an arithmetic number, because the mean of its divisors is an integer number (11061194928).

Almost surely, 2^43323013421 is an apocalyptic number.

It is an amenable number.

43323013421 is a deficient number, since it is larger than the sum of its proper divisors (921766291).

43323013421 is an equidigital number, since it uses as much as digits as its factorization.

43323013421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921766290.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 43323013421 its reverse (12431032334), we get a palindrome (55754045755).

The spelling of 43323013421 in words is "forty-three billion, three hundred twenty-three million, thirteen thousand, four hundred twenty-one".