20111244313 has 2 divisors, whose sum is σ = 20111244314. Its totient is φ = 20111244312.

The previous prime is 20111244311. The next prime is 20111244323. The reversal of 20111244313 is 31344211102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20093629504 + 17614809 = 141752^2 + 4197^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111244313 - 2¹ = 20111244311 is a prime.

Together with 20111244311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20111244311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055622156 + 10055622157.

It is an arithmetic number, because the mean of its divisors is an integer number (10055622157).

Almost surely, 2^20111244313 is an apocalyptic number.

It is an amenable number.

20111244313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111244313 is an equidigital number, since it uses as much as digits as its factorization.

20111244313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20111244313 its reverse (31344211102), we get a palindrome (51455455415).

The spelling of 20111244313 in words is "twenty billion, one hundred eleven million, two hundred forty-four thousand, three hundred thirteen".