203406423 has 16 divisors (see below), whose sum is σ = 296115456. Its totient is φ = 123171840.

The previous prime is 203406403. The next prime is 203406461. The reversal of 203406423 is 324604302.

It is a happy number.

It is not a de Polignac number, because 203406423 - 2¹³ = 203398231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203406393 and 203406402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203406403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57111 + ... + 60567.

It is an arithmetic number, because the mean of its divisors is an integer number (18507216).

Almost surely, 2^203406423 is an apocalyptic number.

203406423 is a deficient number, since it is larger than the sum of its proper divisors (92709033).

203406423 is a wasteful number, since it uses less digits than its factorization.

203406423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5254.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 203406423 is about 14262.0623683954. The cubic root of 203406423 is about 588.1050213866.

The spelling of 203406423 in words is "two hundred three million, four hundred six thousand, four hundred twenty-three".