2111131013 has 2 divisors, whose sum is σ = 2111131014. Its totient is φ = 2111131012.

The previous prime is 2111130991. The next prime is 2111131039. The reversal of 2111131013 is 3101311112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1376558404 + 734572609 = 37102^2 + 27103^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111131013 - 2⁸ = 2111130757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111131313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055565506 + 1055565507.

It is an arithmetic number, because the mean of its divisors is an integer number (1055565507).

Almost surely, 2^2111131013 is an apocalyptic number.

It is an amenable number.

2111131013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111131013 is an equidigital number, since it uses as much as digits as its factorization.

2111131013 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 14.

The square root of 2111131013 is about 45947.0457483395. The cubic root of 2111131013 is about 1282.8377415941.

Adding to 2111131013 its reverse (3101311112), we get a palindrome (5212442125).

The spelling of 2111131013 in words is "two billion, one hundred eleven million, one hundred thirty-one thousand, thirteen".