2011020311 has 2 divisors, whose sum is σ = 2011020312. Its totient is φ = 2011020310.

The previous prime is 2011020289. The next prime is 2011020353. The reversal of 2011020311 is 1130201102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011020311 - 2¹⁰ = 2011019287 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011020292 and 2011020301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011020391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005510155 + 1005510156.

It is an arithmetic number, because the mean of its divisors is an integer number (1005510156).

Almost surely, 2^2011020311 is an apocalyptic number.

2011020311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011020311 is an equidigital number, since it uses as much as digits as its factorization.

2011020311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2011020311 is about 44844.4011109525. The cubic root of 2011020311 is about 1262.2309327719.

Adding to 2011020311 its reverse (1130201102), we get a palindrome (3141221413).

The spelling of 2011020311 in words is "two billion, eleven million, twenty thousand, three hundred eleven".