2115101311 has 2 divisors, whose sum is σ = 2115101312. Its totient is φ = 2115101310.

The previous prime is 2115101281. The next prime is 2115101323. The reversal of 2115101311 is 1131015112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115101311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115141311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057550655 + 1057550656.

It is an arithmetic number, because the mean of its divisors is an integer number (1057550656).

Almost surely, 2^2115101311 is an apocalyptic number.

2115101311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115101311 is an equidigital number, since it uses as much as digits as its factorization.

2115101311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 2115101311 is about 45990.2306039011. The cubic root of 2115101311 is about 1283.6414274775.

Adding to 2115101311 its reverse (1131015112), we get a palindrome (3246116423).

The spelling of 2115101311 in words is "two billion, one hundred fifteen million, one hundred one thousand, three hundred eleven".