816103 has 2 divisors, whose sum is σ = 816104. Its totient is φ = 816102.

The previous prime is 816091. The next prime is 816113. The reversal of 816103 is 301618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816103 - 2¹⁷ = 685031 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 (816113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408051 + 408052.

It is an arithmetic number, because the mean of its divisors is an integer number (408052).

2⁸¹⁶¹⁰³ is an apocalyptic number.

816103 is a deficient number, since it is larger than the sum of its proper divisors (1).

816103 is an equidigital number, since it uses as much as digits as its factorization.

816103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 816103 is about 903.3841929102. The cubic root of 816103 is about 93.4505061816.

It can be divided in two parts, 816 and 103, that multiplied together give a palindrome (84048).

The spelling of 816103 in words is "eight hundred sixteen thousand, one hundred three".