101603 has 2 divisors, whose sum is σ = 101604. Its totient is φ = 101602.

The previous prime is 101599. The next prime is 101611. The reversal of 101603 is 306101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101603 - 2² = 101599 is a prime.

It is a Sophie Germain prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (101653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50801 + 50802.

It is an arithmetic number, because the mean of its divisors is an integer number (50802).

2¹⁰¹⁶⁰³ is an apocalyptic number.

101603 is a deficient number, since it is larger than the sum of its proper divisors (1).

101603 is an equidigital number, since it uses as much as digits as its factorization.

101603 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 101603 is about 318.7522548940. The cubic root of 101603 is about 46.6625903469.

Adding to 101603 its reverse (306101), we get a palindrome (407704).

The spelling of 101603 in words is "one hundred one thousand, six hundred three".