103111103110061 has 2 divisors, whose sum is σ = 103111103110062. Its totient is φ = 103111103110060.

The previous prime is 103111103109913. The next prime is 103111103110063. The reversal of 103111103110061 is 160011301111301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69328620557161 + 33782482552900 = 8326381^2 + 5812270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103111103110061 is a prime.

It is a Sophie Germain prime.

Together with 103111103110063, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103111103110063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51555551555030 + 51555551555031.

It is an arithmetic number, because the mean of its divisors is an integer number (51555551555031).

Almost surely, 2^{103111103110061} is an apocalyptic number.

It is an amenable number.

103111103110061 is a deficient number, since it is larger than the sum of its proper divisors (1).

103111103110061 is an equidigital number, since it uses as much as digits as its factorization.

103111103110061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 20.

Adding to 103111103110061 its reverse (160011301111301), we get a palindrome (263122404221362).

The spelling of 103111103110061 in words is "one hundred three trillion, one hundred eleven billion, one hundred three million, one hundred ten thousand, sixty-one".