43230331221 has 16 divisors (see below), whose sum is σ = 71863408128. Its totient is φ = 22457314800.

The previous prime is 43230331213. The next prime is 43230331259. The reversal of 43230331221 is 12213303234.

It is not a de Polignac number, because 43230331221 - 2³ = 43230331213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43230331191 and 43230331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43230331211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93571915 + ... + 93572376.

It is an arithmetic number, because the mean of its divisors is an integer number (4491463008).

Almost surely, 2^43230331221 is an apocalyptic number.

It is an amenable number.

43230331221 is a deficient number, since it is larger than the sum of its proper divisors (28633076907).

43230331221 is a wasteful number, since it uses less digits than its factorization.

43230331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187144312.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 43230331221 its reverse (12213303234), we get a palindrome (55443634455).

The spelling of 43230331221 in words is "forty-three billion, two hundred thirty million, three hundred thirty-one thousand, two hundred twenty-one".