2103111013 has 2 divisors, whose sum is σ = 2103111014. Its totient is φ = 2103111012.

The previous prime is 2103110941. The next prime is 2103111071. The reversal of 2103111013 is 3101113012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1659503169 + 443607844 = 40737^2 + 21062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2103111013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2103110984 and 2103111002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103111613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051555506 + 1051555507.

It is an arithmetic number, because the mean of its divisors is an integer number (1051555507).

Almost surely, 2^2103111013 is an apocalyptic number.

It is an amenable number.

2103111013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103111013 is an equidigital number, since it uses as much as digits as its factorization.

2103111013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 2103111013 is about 45859.6883220983. The cubic root of 2103111013 is about 1281.2112178053.

Adding to 2103111013 its reverse (3101113012), we get a palindrome (5204224025).

The spelling of 2103111013 in words is "two billion, one hundred three million, one hundred eleven thousand, thirteen".