210103123 has 2 divisors, whose sum is σ = 210103124. Its totient is φ = 210103122.

The previous prime is 210103109. The next prime is 210103139. The reversal of 210103123 is 321301012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210103123 - 2⁹ = 210102611 is a prime.

It is not a weakly prime, because it can be changed into another prime (210103163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105051561 + 105051562.

It is an arithmetic number, because the mean of its divisors is an integer number (105051562).

Almost surely, 2^210103123 is an apocalyptic number.

210103123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210103123 is an equidigital number, since it uses as much as digits as its factorization.

210103123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 210103123 is about 14494.9343910209. The cubic root of 210103123 is about 594.4894738093.

Adding to 210103123 its reverse (321301012), we get a palindrome (531404135).

The spelling of 210103123 in words is "two hundred ten million, one hundred three thousand, one hundred twenty-three".