20103113 has 2 divisors, whose sum is σ = 20103114. Its totient is φ = 20103112.

The previous prime is 20103107. The next prime is 20103137. The reversal of 20103113 is 31130102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 104329 = 4472^2 + 323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20103113 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20103094 and 20103103.

It is not a weakly prime, because it can be changed into another prime (20103103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051556 + 10051557.

It is an arithmetic number, because the mean of its divisors is an integer number (10051557).

Almost surely, 2^20103113 is an apocalyptic number.

It is an amenable number.

20103113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103113 is an equidigital number, since it uses as much as digits as its factorization.

20103113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 20103113 is about 4483.6495179708. The cubic root of 20103113 is about 271.9074485074.

Adding to 20103113 its reverse (31130102), we get a palindrome (51233215).

The spelling of 20103113 in words is "twenty million, one hundred three thousand, one hundred thirteen".