2103110991 has 24 divisors (see below), whose sum is σ = 3095448720. Its totient is φ = 1375574400.

The previous prime is 2103110941. The next prime is 2103111013. The reversal of 2103110991 is 1990113012.

It is not a de Polignac number, because 2103110991 - 2¹⁴ = 2103094607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103110941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283611 + ... + 290931.

It is an arithmetic number, because the mean of its divisors is an integer number (128977030).

Almost surely, 2^2103110991 is an apocalyptic number.

2103110991 is a deficient number, since it is larger than the sum of its proper divisors (992337729).

2103110991 is a wasteful number, since it uses less digits than its factorization.

2103110991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927 (or 7924 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 2103110991 is about 45859.6880822362. The cubic root of 2103110991 is about 1281.2112133378.

The spelling of 2103110991 in words is "two billion, one hundred three million, one hundred ten thousand, nine hundred ninety-one".