203240401 has 16 divisors (see below), whose sum is σ = 252491904. Its totient is φ = 159295104.

The previous prime is 203240399. The next prime is 203240407. The reversal of 203240401 is 104042302.

203240401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 203240401 - 2¹ = 203240399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203240407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700 + ... + 20173.

It is an arithmetic number, because the mean of its divisors is an integer number (15780744).

Almost surely, 2^203240401 is an apocalyptic number.

It is an amenable number.

203240401 is a deficient number, since it is larger than the sum of its proper divisors (49251503).

203240401 is a wasteful number, since it uses less digits than its factorization.

203240401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21000.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 203240401 is about 14256.2407737804. The cubic root of 203240401 is about 587.9449724447.

Adding to 203240401 its reverse (104042302), we get a palindrome (307282703).

The spelling of 203240401 in words is "two hundred three million, two hundred forty thousand, four hundred one".