10311444221 has 16 divisors (see below), whose sum is σ = 11141019120. Its totient is φ = 9487134720.

The previous prime is 10311444217. The next prime is 10311444233. The reversal of 10311444221 is 12244411301.

It can be written as a sum of positive squares in 8 ways, for example, as 1294992196 + 9016452025 = 35986^2 + 94955^2 .

It is a cyclic number.

It is not a de Polignac number, because 10311444221 - 2² = 10311444217 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 (10311443221) 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, 9981521 + ... + 9982553.

It is an arithmetic number, because the mean of its divisors is an integer number (696313695).

Almost surely, 2^10311444221 is an apocalyptic number.

It is an amenable number.

10311444221 is a deficient number, since it is larger than the sum of its proper divisors (829574899).

10311444221 is a wasteful number, since it uses less digits than its factorization.

10311444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 10311444221 its reverse (12244411301), we get a palindrome (22555855522).

The spelling of 10311444221 in words is "ten billion, three hundred eleven million, four hundred forty-four thousand, two hundred twenty-one".