20123313113 has 2 divisors, whose sum is σ = 20123313114. Its totient is φ = 20123313112.

The previous prime is 20123313097. The next prime is 20123313131. The reversal of 20123313113 is 31131332102.

Together with next prime (20123313131) 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., 14101087504 + 6022225609 = 118748^2 + 77603^2 .

It is a cyclic number.

It is not a de Polignac number, because 20123313113 - 2⁴ = 20123313097 is a prime.

It is not a weakly prime, because it can be changed into another prime (20123313163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061656556 + 10061656557.

It is an arithmetic number, because the mean of its divisors is an integer number (10061656557).

Almost surely, 2^20123313113 is an apocalyptic number.

It is an amenable number.

20123313113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123313113 is an equidigital number, since it uses as much as digits as its factorization.

20123313113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20123313113 its reverse (31131332102), we get a palindrome (51254645215).

The spelling of 20123313113 in words is "twenty billion, one hundred twenty-three million, three hundred thirteen thousand, one hundred thirteen".