2111001311 has 2 divisors, whose sum is σ = 2111001312. Its totient is φ = 2111001310.

The previous prime is 2111001307. The next prime is 2111001313. The reversal of 2111001311 is 1131001112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111001311 - 2² = 2111001307 is a prime.

Together with 2111001313, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111001292 and 2111001301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111001313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055500655 + 1055500656.

It is an arithmetic number, because the mean of its divisors is an integer number (1055500656).

Almost surely, 2^2111001311 is an apocalyptic number.

2111001311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111001311 is an equidigital number, since it uses as much as digits as its factorization.

2111001311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 2111001311 is about 45945.6342975043. The cubic root of 2111001311 is about 1282.8114697320.

Adding to 2111001311 its reverse (1131001112), we get a palindrome (3242002423).

The spelling of 2111001311 in words is "two billion, one hundred eleven million, one thousand, three hundred eleven".