4431304334421 has 24 divisors (see below), whose sum is σ = 6496472556704. Its totient is φ = 2910036080160.

The previous prime is 4431304334417. The next prime is 4431304334447. The reversal of 4431304334421 is 1244334031344.

4431304334421 is a `hidden beast` number, since 4 + 4 + 3 + 1 + 304 + 3 + 344 + 2 + 1 = 666.

It is not a de Polignac number, because 4431304334421 - 2² = 4431304334417 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 (4431304334221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33603906 + ... + 33735516.

Almost surely, 2^{4431304334421} is an apocalyptic number.

It is an amenable number.

4431304334421 is a deficient number, since it is larger than the sum of its proper divisors (2065168222283).

4431304334421 is a wasteful number, since it uses less digits than its factorization.

4431304334421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187521 (or 187518 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 4431304334421 its reverse (1244334031344), we get a palindrome (5675638365765).

The spelling of 4431304334421 in words is "four trillion, four hundred thirty-one billion, three hundred four million, three hundred thirty-four thousand, four hundred twenty-one".