44431403121 has 120 divisors (see below), whose sum is σ = 82038159720. Its totient is φ = 23849054208.

The previous prime is 44431403113. The next prime is 44431403123. The reversal of 44431403121 is 12130413444.

It can be written as a sum of positive squares in 4 ways, for example, as 18724090896 + 25707312225 = 136836^2 + 160335^2 .

It is not a de Polignac number, because 44431403121 - 2³ = 44431403113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (44431403123) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 4253521 + ... + 4263953.

It is an arithmetic number, because the mean of its divisors is an integer number (683651331).

Almost surely, 2^44431403121 is an apocalyptic number.

It is an amenable number.

44431403121 is a deficient number, since it is larger than the sum of its proper divisors (37606756599).

44431403121 is a wasteful number, since it uses less digits than its factorization.

44431403121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10525 (or 10509 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 44431403121 its reverse (12130413444), we get a palindrome (56561816565).

The spelling of 44431403121 in words is "forty-four billion, four hundred thirty-one million, four hundred three thousand, one hundred twenty-one".