20313233113 has 2 divisors, whose sum is σ = 20313233114. Its totient is φ = 20313233112.

The previous prime is 20313233093. The next prime is 20313233131. The reversal of 20313233113 is 31133231302.

Together with next prime (20313233131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10710801049 + 9602432064 = 103493^2 + 97992^2 .

It is a cyclic number.

It is not a de Polignac number, because 20313233113 - 2⁹ = 20313232601 is a prime.

It is not a weakly prime, because it can be changed into another prime (20313233183) 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 as a sum of consecutive naturals, namely, 10156616556 + 10156616557.

It is an arithmetic number, because the mean of its divisors is an integer number (10156616557).

Almost surely, 2^20313233113 is an apocalyptic number.

It is an amenable number.

20313233113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313233113 is an equidigital number, since it uses as much as digits as its factorization.

20313233113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 20313233113 its reverse (31133231302), we get a palindrome (51446464415).

The spelling of 20313233113 in words is "twenty billion, three hundred thirteen million, two hundred thirty-three thousand, one hundred thirteen".