203130406 has 8 divisors (see below), whose sum is σ = 320732280. Its totient is φ = 96219648.

The previous prime is 203130401. The next prime is 203130469. The reversal of 203130406 is 604031302.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203130401) 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, 2672731 + ... + 2672806.

It is an arithmetic number, because the mean of its divisors is an integer number (40091535).

Almost surely, 2^203130406 is an apocalyptic number.

203130406 is a deficient number, since it is larger than the sum of its proper divisors (117601874).

203130406 is a wasteful number, since it uses less digits than its factorization.

203130406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345558.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 203130406 is about 14252.3824675035. The cubic root of 203130406 is about 587.8388867825.

Adding to 203130406 its reverse (604031302), we get a palindrome (807161708).

The spelling of 203130406 in words is "two hundred three million, one hundred thirty thousand, four hundred six".