2113103123 has 4 divisors (see below), whose sum is σ = 2113541808. Its totient is φ = 2112664440.

The previous prime is 2113103099. The next prime is 2113103147. The reversal of 2113103123 is 3213013112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2113103099) and next prime (2113103147).

It is a cyclic number.

It is not a de Polignac number, because 2113103123 - 2⁸ = 2113102867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113103023) 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, 212036 + ... + 221777.

It is an arithmetic number, because the mean of its divisors is an integer number (528385452).

Almost surely, 2^2113103123 is an apocalyptic number.

2113103123 is a deficient number, since it is larger than the sum of its proper divisors (438685).

2113103123 is an equidigital number, since it uses as much as digits as its factorization.

2113103123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438684.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2113103123 is about 45968.5014221695. The cubic root of 2113103123 is about 1283.2370709528.

Adding to 2113103123 its reverse (3213013112), we get a palindrome (5326116235).

The spelling of 2113103123 in words is "two billion, one hundred thirteen million, one hundred three thousand, one hundred twenty-three".