2103111613 has 2 divisors, whose sum is σ = 2103111614. Its totient is φ = 2103111612.

The previous prime is 2103111601. The next prime is 2103111631. The reversal of 2103111613 is 3161113012.

Together with next prime (2103111631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2060887609 + 42224004 = 45397^2 + 6498^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103111613 - 2²⁹ = 1566240701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103111683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051555806 + 1051555807.

It is an arithmetic number, because the mean of its divisors is an integer number (1051555807).

Almost surely, 2^2103111613 is an apocalyptic number.

It is an amenable number.

2103111613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103111613 is an equidigital number, since it uses as much as digits as its factorization.

2103111613 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2103111613 is about 45859.6948637908. The cubic root of 2103111613 is about 1281.2113396449.

Adding to 2103111613 its reverse (3161113012), we get a palindrome (5264224625).

The spelling of 2103111613 in words is "two billion, one hundred three million, one hundred eleven thousand, six hundred thirteen".