4431230321345 has 16 divisors (see below), whose sum is σ = 5386553760000. Its totient is φ = 3498962133888.

The previous prime is 4431230321341. The next prime is 4431230321359. The reversal of 4431230321345 is 5431230321344.

It is a cyclic number.

It is not a de Polignac number, because 4431230321345 - 2² = 4431230321341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4431230321341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635315 + ... + 3044024.

It is an arithmetic number, because the mean of its divisors is an integer number (336659610000).

Almost surely, 2^{4431230321345} is an apocalyptic number.

It is an amenable number.

4431230321345 is a deficient number, since it is larger than the sum of its proper divisors (955323438655).

4431230321345 is a wasteful number, since it uses less digits than its factorization.

4431230321345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682472.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 4431230321345 its reverse (5431230321344), we get a palindrome (9862460642689).

Subtracting 4431230321345 from its reverse (5431230321344), we obtain a palindrome (999999999999).

The spelling of 4431230321345 in words is "four trillion, four hundred thirty-one billion, two hundred thirty million, three hundred twenty-one thousand, three hundred forty-five".