2011311331 has 2 divisors, whose sum is σ = 2011311332. Its totient is φ = 2011311330.

The previous prime is 2011311311. The next prime is 2011311349. The reversal of 2011311331 is 1331131102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2011311331 - 2⁵ = 2011311299 is a prime.

It is a super-2 number, since 2×2011311331² = 8090746540417983122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2011311311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005655665 + 1005655666.

It is an arithmetic number, because the mean of its divisors is an integer number (1005655666).

Almost surely, 2^2011311331 is an apocalyptic number.

2011311331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011311331 is an equidigital number, since it uses as much as digits as its factorization.

2011311331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 2011311331 is about 44847.6457687580. The cubic root of 2011311331 is about 1262.2918167464.

Adding to 2011311331 its reverse (1331131102), we get a palindrome (3342442433).

The spelling of 2011311331 in words is "two billion, eleven million, three hundred eleven thousand, three hundred thirty-one".