100103 has 2 divisors, whose sum is σ = 100104.
Its totient is φ = 100102.
The previous prime is 100069. The next prime is 100109. The reversal of 100103 is 301001.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 100103 - 210 = 99079 is a prime.
It is a super-2 number, since 2×1001032 = 20041221218, which contains 22 as substring.
It is a Chen prime.
It is a zygodrome in base 2.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (100109) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50051 + 50052.
It is an arithmetic number, because the mean of its divisors is an integer number (50052).
2100103 is an apocalyptic number.
100103 is a deficient number, since it is larger than the sum of its proper divisors (1).
100103 is an equidigital number, since it uses as much as digits as its factorization.
100103 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3, while the sum is 5.
The square root of 100103 is about 316.3905814022.
The cubic root of 100103 is about 46.4318189895.
Adding to 100103 its reverse (301001), we get a palindrome (401104).
The spelling of 100103 in words is "one hundred thousand, one hundred three", and thus it is an iban number.