203404413 has 8 divisors (see below), whose sum is σ = 271684800. Its totient is φ = 135363488.

The previous prime is 203404393. The next prime is 203404451. The reversal of 203404413 is 314404302.

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

It is a cyclic number.

It is not a de Polignac number, because 203404413 - 2⁶ = 203404349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203404413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203404483) 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 7 ways as a sum of consecutive naturals, for example, 57873 + ... + 61286.

It is an arithmetic number, because the mean of its divisors is an integer number (33960600).

Almost surely, 2^203404413 is an apocalyptic number.

It is an amenable number.

203404413 is a deficient number, since it is larger than the sum of its proper divisors (68280387).

203404413 is a wasteful number, since it uses less digits than its factorization.

203404413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119731.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 203404413 is about 14261.9919015543. The cubic root of 203404413 is about 588.1030842222.

Adding to 203404413 its reverse (314404302), we get a palindrome (517808715).

It can be divided in two parts, 20340 and 4413, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 203404413 in words is "two hundred three million, four hundred four thousand, four hundred thirteen".