100003123 has 8 divisors (see below), whose sum is σ = 109485936. Its totient is φ = 90585600.

The previous prime is 100003091. The next prime is 100003151. The reversal of 100003123 is 321300001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100003123 - 2⁵ = 100003091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100003153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13086 + ... + 19267.

It is an arithmetic number, because the mean of its divisors is an integer number (13685742).

Almost surely, 2^100003123 is an apocalyptic number.

100003123 is a deficient number, since it is larger than the sum of its proper divisors (9482813).

100003123 is a wasteful number, since it uses less digits than its factorization.

100003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32645.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 100003123 is about 10000.1561487809. The cubic root of 100003123 is about 464.1637152050.

Adding to 100003123 its reverse (321300001), we get a palindrome (421303124).

The spelling of 100003123 in words is "one hundred million, three thousand, one hundred twenty-three".