123003503 has 8 divisors (see below), whose sum is σ = 144375072. Its totient is φ = 102581856.

The previous prime is 123003497. The next prime is 123003509. The reversal of 123003503 is 305300321.

It is an interprime number because it is at equal distance from previous prime (123003497) and next prime (123003509).

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 123003503 - 2⁴ = 123003487 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 (123003509) 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, 237200 + ... + 237717.

It is an arithmetic number, because the mean of its divisors is an integer number (18046884).

Almost surely, 2^123003503 is an apocalyptic number.

123003503 is a deficient number, since it is larger than the sum of its proper divisors (21371569).

123003503 is an equidigital number, since it uses as much as digits as its factorization.

123003503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474961.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 123003503 is about 11090.6944327215. The cubic root of 123003503 is about 497.3237044430.

Adding to 123003503 its reverse (305300321), we get a palindrome (428303824).

The spelling of 123003503 in words is "one hundred twenty-three million, three thousand, five hundred three".