9999103123 has 4 divisors (see below), whose sum is σ = 10058978160. Its totient is φ = 9939228088.

The previous prime is 9999103091. The next prime is 9999103141. The reversal of 9999103123 is 3213019999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9999103123 - 2⁵ = 9999103091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999103183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29937268 + ... + 29937601.

It is an arithmetic number, because the mean of its divisors is an integer number (2514744540).

Almost surely, 2^9999103123 is an apocalyptic number.

9999103123 is a deficient number, since it is larger than the sum of its proper divisors (59875037).

9999103123 is a wasteful number, since it uses less digits than its factorization.

9999103123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59875036.

The product of its (nonzero) digits is 118098, while the sum is 46.

The square root of 9999103123 is about 99995.5155144469. The cubic root of 9999103123 is about 2154.3702793422.

The spelling of 9999103123 in words is "nine billion, nine hundred ninety-nine million, one hundred three thousand, one hundred twenty-three".