445320232321 has 4 divisors (see below), whose sum is σ = 456181701444. Its totient is φ = 434458763200.

The previous prime is 445320232319. The next prime is 445320232369. The reversal of 445320232321 is 123232023544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6498778225 + 438821454096 = 80615^2 + 662436^2 .

It is not a de Polignac number, because 445320232321 - 2¹ = 445320232319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445320232121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5430734500 + ... + 5430734581.

It is an arithmetic number, because the mean of its divisors is an integer number (114045425361).

Almost surely, 2^445320232321 is an apocalyptic number.

445320232321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

445320232321 is a deficient number, since it is larger than the sum of its proper divisors (10861469123).

445320232321 is a wasteful number, since it uses less digits than its factorization.

445320232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10861469122.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 445320232321 its reverse (123232023544), we get a palindrome (568552255865).

The spelling of 445320232321 in words is "four hundred forty-five billion, three hundred twenty million, two hundred thirty-two thousand, three hundred twenty-one".