44021320331 has 2 divisors, whose sum is σ = 44021320332. Its totient is φ = 44021320330.

The previous prime is 44021320313. The next prime is 44021320333. The reversal of 44021320331 is 13302312044.

Together with previous prime (44021320313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44021320331 is a prime.

It is a super-2 number, since 2×44021320331² (a number of 22 digits) contains 22 as substring.

Together with 44021320333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 44021320297 and 44021320306.

It is not a weakly prime, because it can be changed into another prime (44021320333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22010660165 + 22010660166.

It is an arithmetic number, because the mean of its divisors is an integer number (22010660166).

Almost surely, 2^44021320331 is an apocalyptic number.

44021320331 is a deficient number, since it is larger than the sum of its proper divisors (1).

44021320331 is an equidigital number, since it uses as much as digits as its factorization.

44021320331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 44021320331 its reverse (13302312044), we get a palindrome (57323632375).

The spelling of 44021320331 in words is "forty-four billion, twenty-one million, three hundred twenty thousand, three hundred thirty-one".