123553103 has 4 divisors (see below), whose sum is σ = 123590880. Its totient is φ = 123515328.

The previous prime is 123553099. The next prime is 123553109. The reversal of 123553103 is 301355321.

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 123553103 - 2² = 123553099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123553109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13463 + ... + 20696.

It is an arithmetic number, because the mean of its divisors is an integer number (30897720).

Almost surely, 2^123553103 is an apocalyptic number.

123553103 is a deficient number, since it is larger than the sum of its proper divisors (37777).

123553103 is an equidigital number, since it uses as much as digits as its factorization.

123553103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37776.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 123553103 is about 11115.4443455941. Note that the first 3 decimals coincide. The cubic root of 123553103 is about 498.0633121659.

The spelling of 123553103 in words is "one hundred twenty-three million, five hundred fifty-three thousand, one hundred three".