203630397 has 8 divisors (see below), whose sum is σ = 271573344. Its totient is φ = 135720528.

The previous prime is 203630389. The next prime is 203630411. The reversal of 203630397 is 793036302.

203630397 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 not a de Polignac number, because 203630397 - 2³ = 203630389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203630347) 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, 18238 + ... + 27200.

It is an arithmetic number, because the mean of its divisors is an integer number (33946668).

Almost surely, 2^203630397 is an apocalyptic number.

It is an amenable number.

203630397 is a deficient number, since it is larger than the sum of its proper divisors (67942947).

203630397 is an equidigital number, since it uses as much as digits as its factorization.

203630397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16539.

The product of its (nonzero) digits is 20412, while the sum is 33.

The square root of 203630397 is about 14269.9122982589. The cubic root of 203630397 is about 588.3207994255.

Adding to 203630397 its reverse (793036302), we get a palindrome (996666699).

The spelling of 203630397 in words is "two hundred three million, six hundred thirty thousand, three hundred ninety-seven".