203122123 has 4 divisors (see below), whose sum is σ = 203151400. Its totient is φ = 203092848.

The previous prime is 203122121. The next prime is 203122147. The reversal of 203122123 is 321221302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203122123 - 2¹ = 203122121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203122097 and 203122106.

It is not an unprimeable number, because it can be changed into a prime (203122121) 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, 2311 + ... + 20287.

It is an arithmetic number, because the mean of its divisors is an integer number (50787850).

Almost surely, 2^203122123 is an apocalyptic number.

203122123 is a deficient number, since it is larger than the sum of its proper divisors (29277).

203122123 is a wasteful number, since it uses less digits than its factorization.

203122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29276.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 203122123 is about 14252.0918815450. The cubic root of 203122123 is about 587.8308966187.

Adding to 203122123 its reverse (321221302), we get a palindrome (524343425).

The spelling of 203122123 in words is "two hundred three million, one hundred twenty-two thousand, one hundred twenty-three".