103405321111 has 2 divisors, whose sum is σ = 103405321112. Its totient is φ = 103405321110.

The previous prime is 103405321109. The next prime is 103405321127. The reversal of 103405321111 is 111123504301.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103405321111 - 2¹ = 103405321109 is a prime.

Together with 103405321109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103405351111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51702660555 + 51702660556.

It is an arithmetic number, because the mean of its divisors is an integer number (51702660556).

Almost surely, 2^103405321111 is an apocalyptic number.

103405321111 is a deficient number, since it is larger than the sum of its proper divisors (1).

103405321111 is an equidigital number, since it uses as much as digits as its factorization.

103405321111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 103405321111 its reverse (111123504301), we get a palindrome (214528825412).

The spelling of 103405321111 in words is "one hundred three billion, four hundred five million, three hundred twenty-one thousand, one hundred eleven".