210123030203 has 4 divisors (see below), whose sum is σ = 210127581768. Its totient is φ = 210118478640.

The previous prime is 210123030181. The next prime is 210123030211. The reversal of 210123030203 is 302030321012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210123030203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210123030253) 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, 2205818 + ... + 2299103.

It is an arithmetic number, because the mean of its divisors is an integer number (52531895442).

Almost surely, 2^210123030203 is an apocalyptic number.

210123030203 is a deficient number, since it is larger than the sum of its proper divisors (4551565).

210123030203 is an equidigital number, since it uses as much as digits as its factorization.

210123030203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551564.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 210123030203 its reverse (302030321012), we get a palindrome (512153351215).

The spelling of 210123030203 in words is "two hundred ten billion, one hundred twenty-three million, thirty thousand, two hundred three".