203401321 has 8 divisors (see below), whose sum is σ = 209078280. Its totient is φ = 197733888.

The previous prime is 203401313. The next prime is 203401339. The reversal of 203401321 is 123104302.

It is a happy number.

203401321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 48149721 + 155251600 = 6939^2 + 12460^2 .

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 203401321 - 2³ = 203401313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203401295 and 203401304.

It is not an unprimeable number, because it can be changed into a prime (203401381) 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, 75225 + ... + 77881.

It is an arithmetic number, because the mean of its divisors is an integer number (26134785).

Almost surely, 2^203401321 is an apocalyptic number.

It is an amenable number.

203401321 is a deficient number, since it is larger than the sum of its proper divisors (5676959).

203401321 is a wasteful number, since it uses less digits than its factorization.

203401321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 203401321 is about 14261.8835011369. The cubic root of 203401321 is about 588.1001042411.

Adding to 203401321 its reverse (123104302), we get a palindrome (326505623).

The spelling of 203401321 in words is "two hundred three million, four hundred one thousand, three hundred twenty-one".