44231021 has 6 divisors (see below), whose sum is σ = 45460170. Its totient is φ = 43034256.

The previous prime is 44231009. The next prime is 44231023. The reversal of 44231021 is 12013244.

It can be written as a sum of positive squares in 3 ways, for example, as 35164900 + 9066121 = 5930^2 + 3011^2 .

It is not a de Polignac number, because 44231021 - 2¹⁸ = 43968877 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 (44231023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14786 + ... + 17523.

It is an arithmetic number, because the mean of its divisors is an integer number (7576695).

Almost surely, 2^44231021 is an apocalyptic number.

It is an amenable number.

44231021 is a deficient number, since it is larger than the sum of its proper divisors (1229149).

44231021 is an equidigital number, since it uses as much as digits as its factorization.

44231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32383 (or 32346 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 44231021 is about 6650.6406458326. The cubic root of 44231021 is about 353.6516224334.

Adding to 44231021 its reverse (12013244), we get a palindrome (56244265).

The spelling of 44231021 in words is "forty-four million, two hundred thirty-one thousand, twenty-one".