999603103 has 2 divisors, whose sum is σ = 999603104. Its totient is φ = 999603102.

The previous prime is 999603061. The next prime is 999603127. The reversal of 999603103 is 301306999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999603103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999603133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499801551 + 499801552.

It is an arithmetic number, because the mean of its divisors is an integer number (499801552).

Almost surely, 2^999603103 is an apocalyptic number.

999603103 is a deficient number, since it is larger than the sum of its proper divisors (1).

999603103 is an equidigital number, since it uses as much as digits as its factorization.

999603103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366, while the sum is 40.

The square root of 999603103 is about 31616.5004862967. The cubic root of 999603103 is about 999.8676834931.

The spelling of 999603103 in words is "nine hundred ninety-nine million, six hundred three thousand, one hundred three".