20113113103 has 2 divisors, whose sum is σ = 20113113104. Its totient is φ = 20113113102.

The previous prime is 20113113091. The next prime is 20113113107. The reversal of 20113113103 is 30131131102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20113113103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113113107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056556551 + 10056556552.

It is an arithmetic number, because the mean of its divisors is an integer number (10056556552).

Almost surely, 2^20113113103 is an apocalyptic number.

20113113103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113113103 is an equidigital number, since it uses as much as digits as its factorization.

20113113103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 20113113103 its reverse (30131131102), we get a palindrome (50244244205).

The spelling of 20113113103 in words is "twenty billion, one hundred thirteen million, one hundred thirteen thousand, one hundred three".