2103215306 has 8 divisors (see below), whose sum is σ = 3155340420. Its totient is φ = 1051435168.

The previous prime is 2103215293. The next prime is 2103215339. The reversal of 2103215306 is 6035123012.

It can be written as a sum of positive squares in 2 ways, for example, as 2016818281 + 86397025 = 44909^2 + 9295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70421 + ... + 95736.

Almost surely, 2^2103215306 is an apocalyptic number.

2103215306 is a deficient number, since it is larger than the sum of its proper divisors (1052125114).

2103215306 is a wasteful number, since it uses less digits than its factorization.

2103215306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172488.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2103215306 is about 45860.8253959738. The cubic root of 2103215306 is about 1281.2323958208.

Adding to 2103215306 its reverse (6035123012), we get a palindrome (8138338318).

The spelling of 2103215306 in words is "two billion, one hundred three million, two hundred fifteen thousand, three hundred six".