2101031305 has 16 divisors (see below), whose sum is σ = 2670857280. Its totient is φ = 1582206912.

The previous prime is 2101031291. The next prime is 2101031311. The reversal of 2101031305 is 5031301012.

It is not a de Polignac number, because 2101031305 - 2¹¹ = 2101029257 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 55519 + ... + 85348.

It is an arithmetic number, because the mean of its divisors is an integer number (166928580).

Almost surely, 2^2101031305 is an apocalyptic number.

It is an amenable number.

2101031305 is a deficient number, since it is larger than the sum of its proper divisors (569825975).

2101031305 is a wasteful number, since it uses less digits than its factorization.

2101031305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141048.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 2101031305 is about 45837.0080284479. The cubic root of 2101031305 is about 1280.7887604736.

Adding to 2101031305 its reverse (5031301012), we get a palindrome (7132332317).

The spelling of 2101031305 in words is "two billion, one hundred one million, thirty-one thousand, three hundred five".