2011203109 has 8 divisors (see below), whose sum is σ = 2022066072. Its totient is φ = 2000359680.

The previous prime is 2011203107. The next prime is 2011203113. The reversal of 2011203109 is 9013021102.

It can be written as a sum of positive squares in 4 ways, for example, as 41796225 + 1969406884 = 6465^2 + 44378^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2011203109 - 2¹ = 2011203107 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 (2011203107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231769 + ... + 240289.

It is an arithmetic number, because the mean of its divisors is an integer number (252758259).

Almost surely, 2^2011203109 is an apocalyptic number.

It is an amenable number.

2011203109 is a deficient number, since it is larger than the sum of its proper divisors (10862963).

2011203109 is a wasteful number, since it uses less digits than its factorization.

2011203109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9767.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 2011203109 is about 44846.4392008998. The cubic root of 2011203109 is about 1262.2691764266.

It can be divided in two parts, 2011 and 203109, that added together give a triangular number (205120 = T₆₄₀).

The spelling of 2011203109 in words is "two billion, eleven million, two hundred three thousand, one hundred nine".