2012103091 has 4 divisors (see below), whose sum is σ = 2012193400. Its totient is φ = 2012012784.

The previous prime is 2012103047. The next prime is 2012103103. The reversal of 2012103091 is 1903012102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2012103091 - 2¹³ = 2012094899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012103001) 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 in 3 ways as a sum of consecutive naturals, for example, 14815 + ... + 65143.

It is an arithmetic number, because the mean of its divisors is an integer number (503048350).

Almost surely, 2^2012103091 is an apocalyptic number.

2012103091 is a deficient number, since it is larger than the sum of its proper divisors (90309).

2012103091 is an equidigital number, since it uses as much as digits as its factorization.

2012103091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90308.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 2012103091 is about 44856.4721194166. The cubic root of 2012103091 is about 1262.4574302674.

Adding to 2012103091 its reverse (1903012102), we get a palindrome (3915115193).

The spelling of 2012103091 in words is "two billion, twelve million, one hundred three thousand, ninety-one".