202123103 has 32 divisors (see below), whose sum is σ = 261273600. Its totient is φ = 151975296.

The previous prime is 202123093. The next prime is 202123111. The reversal of 202123103 is 301321202.

It is a happy number.

202123103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 202123103 - 2¹⁶ = 202057567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202123903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562838 + ... + 563196.

It is an arithmetic number, because the mean of its divisors is an integer number (8164800).

Almost surely, 2^202123103 is an apocalyptic number.

202123103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

202123103 is a deficient number, since it is larger than the sum of its proper divisors (59150497).

202123103 is a wasteful number, since it uses less digits than its factorization.

202123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 202123103 is about 14217.0004923683. Note that the first 3 decimals coincide. The cubic root of 202123103 is about 586.8655984647.

Subtracting from 202123103 its sum of digits (14), we obtain a square (202123089 = 14217²).

Adding to 202123103 its reverse (301321202), we get a palindrome (503444305).

The spelling of 202123103 in words is "two hundred two million, one hundred twenty-three thousand, one hundred three".