2140211305 has 4 divisors (see below), whose sum is σ = 2568253572. Its totient is φ = 1712169040.

The previous prime is 2140211279. The next prime is 2140211309. The reversal of 2140211305 is 5031120412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1305521424 + 834689881 = 36132^2 + 28891^2 .

It is not a de Polignac number, because 2140211305 - 2¹¹ = 2140209257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140211309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214021126 + ... + 214021135.

It is an arithmetic number, because the mean of its divisors is an integer number (642063393).

Almost surely, 2^2140211305 is an apocalyptic number.

It is an amenable number.

2140211305 is a deficient number, since it is larger than the sum of its proper divisors (428042267).

2140211305 is an equidigital number, since it uses as much as digits as its factorization.

2140211305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428042266.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2140211305 is about 46262.4178464550. The cubic root of 2140211305 is about 1288.7011554819.

Adding to 2140211305 its reverse (5031120412), we get a palindrome (7171331717).

The spelling of 2140211305 in words is "two billion, one hundred forty million, two hundred eleven thousand, three hundred five".