203405323 has 8 divisors (see below), whose sum is σ = 234949680. Its totient is φ = 174036480.

The previous prime is 203405297. The next prime is 203405341. The reversal of 203405323 is 323504302.

203405323 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 a de Polignac number, because none of the positive numbers 2^k-203405323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203405294 and 203405303.

It is not an unprimeable number, because it can be changed into a prime (203406323) 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, 543678 + ... + 544051.

It is an arithmetic number, because the mean of its divisors is an integer number (29368710).

Almost surely, 2^203405323 is an apocalyptic number.

203405323 is a deficient number, since it is larger than the sum of its proper divisors (31544357).

203405323 is a wasteful number, since it uses less digits than its factorization.

203405323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087757.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 203405323 is about 14262.0238044956. The cubic root of 203405323 is about 588.1039612485.

Adding to 203405323 its reverse (323504302), we get a palindrome (526909625).

The spelling of 203405323 in words is "two hundred three million, four hundred five thousand, three hundred twenty-three".