2011030243 has 4 divisors (see below), whose sum is σ = 2116873960. Its totient is φ = 1905186528.

The previous prime is 2011030237. The next prime is 2011030297. The reversal of 2011030243 is 3420301102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3420301102 = 2 ⋅1710150551.

It is a cyclic number.

It is not a de Polignac number, because 2011030243 - 2⁵ = 2011030211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011030843) 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, 52921830 + ... + 52921867.

It is an arithmetic number, because the mean of its divisors is an integer number (529218490).

Almost surely, 2^2011030243 is an apocalyptic number.

2011030243 is a deficient number, since it is larger than the sum of its proper divisors (105843717).

2011030243 is a wasteful number, since it uses less digits than its factorization.

2011030243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105843716.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2011030243 is about 44844.5118492776. The cubic root of 2011030243 is about 1262.2330107315.

Adding to 2011030243 its reverse (3420301102), we get a palindrome (5431331345).

The spelling of 2011030243 in words is "two billion, eleven million, thirty thousand, two hundred forty-three".