2011311340 has 24 divisors (see below), whose sum is σ = 4224652992. Its totient is φ = 804353280.

The previous prime is 2011311331. The next prime is 2011311349. The reversal of 2011311340 is 431131102.

It is an interprime number because it is at equal distance from previous prime (2011311331) and next prime (2011311349).

It is not an unprimeable number, because it can be changed into a prime (2011311349) 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, 131997 + ... + 146443.

It is an arithmetic number, because the mean of its divisors is an integer number (176027208).

Almost surely, 2^2011311340 is an apocalyptic number.

2011311340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011311340 is an abundant number, since it is smaller than the sum of its proper divisors (2213341652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011311340 is a wasteful number, since it uses less digits than its factorization.

2011311340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21417 (or 21415 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2011311340 is about 44847.6458690977. The cubic root of 2011311340 is about 1262.2918186292.

Adding to 2011311340 its reverse (431131102), we get a palindrome (2442442442).

The spelling of 2011311340 in words is "two billion, eleven million, three hundred eleven thousand, three hundred forty".