203220123 has 8 divisors (see below), whose sum is σ = 272176128. Its totient is φ = 134872104.

The previous prime is 203220119. The next prime is 203220163. The reversal of 203220123 is 321022302.

203220123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203220123 - 2² = 203220119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203220113) 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, 151215 + ... + 152552.

It is an arithmetic number, because the mean of its divisors is an integer number (34022016).

Almost surely, 2^203220123 is an apocalyptic number.

203220123 is a deficient number, since it is larger than the sum of its proper divisors (68956005).

203220123 is a wasteful number, since it uses less digits than its factorization.

203220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303993.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 203220123 is about 14255.5295587361. The cubic root of 203220123 is about 587.9254180243.

Adding to 203220123 its reverse (321022302), we get a palindrome (524242425).

It can be divided in two parts, 2032 and 20123, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 203220123 in words is "two hundred three million, two hundred twenty thousand, one hundred twenty-three".