2011323043 has 4 divisors (see below), whose sum is σ = 2080679040. Its totient is φ = 1941967048.

The previous prime is 2011323037. The next prime is 2011323073. The reversal of 2011323043 is 3403231102.

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

It is a cyclic number.

It is not a de Polignac number, because 2011323043 - 2⁵ = 2011323011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011323043.

It is not an unprimeable number, because it can be changed into a prime (2011323073) 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, 34677955 + ... + 34678012.

It is an arithmetic number, because the mean of its divisors is an integer number (520169760).

Almost surely, 2^2011323043 is an apocalyptic number.

2011323043 is a deficient number, since it is larger than the sum of its proper divisors (69355997).

2011323043 is an equidigital number, since it uses as much as digits as its factorization.

2011323043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69355996.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2011323043 is about 44847.7763439839. The cubic root of 2011323043 is about 1262.2942668781.

Adding to 2011323043 its reverse (3403231102), we get a palindrome (5414554145).

The spelling of 2011323043 in words is "two billion, eleven million, three hundred twenty-three thousand, forty-three".