2011331303 has 4 divisors (see below), whose sum is σ = 2011985520. Its totient is φ = 2010677088.

The previous prime is 2011331297. The next prime is 2011331339. The reversal of 2011331303 is 3031331102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011331303 is a prime.

It is a super-2 number, since 2×2011331303² = 8090907220855355618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011331363) 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, 322475 + ... + 328652.

It is an arithmetic number, because the mean of its divisors is an integer number (502996380).

Almost surely, 2^2011331303 is an apocalyptic number.

2011331303 is a deficient number, since it is larger than the sum of its proper divisors (654217).

2011331303 is an equidigital number, since it uses as much as digits as its factorization.

2011331303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654216.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 2011331303 is about 44847.8684331820. The cubic root of 2011331303 is about 1262.2959948512.

Adding to 2011331303 its reverse (3031331102), we get a palindrome (5042662405).

The spelling of 2011331303 in words is "two billion, eleven million, three hundred thirty-one thousand, three hundred three".