10203123 has 24 divisors (see below), whose sum is σ = 16343040. Its totient is φ = 5639760.

The previous prime is 10203119. The next prime is 10203181. The reversal of 10203123 is 32130201.

It is a happy number.

It is not a de Polignac number, because 10203123 - 2² = 10203119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10203099 and 10203108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3438 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (680960).

Almost surely, 2^10203123 is an apocalyptic number.

10203123 is a deficient number, since it is larger than the sum of its proper divisors (6139917).

10203123 is a wasteful number, since it uses less digits than its factorization.

10203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287 (or 2280 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 10203123 is about 3194.2327717310. The cubic root of 10203123 is about 216.8924197930.

Adding to 10203123 its reverse (32130201), we get a palindrome (42333324).

The spelling of 10203123 in words is "ten million, two hundred three thousand, one hundred twenty-three".