201321203 has 4 divisors (see below), whose sum is σ = 202654608. Its totient is φ = 199987800.

The previous prime is 201321199. The next prime is 201321209. The reversal of 201321203 is 302123102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201321203 - 2² = 201321199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201321209) 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, 666476 + ... + 666777.

It is an arithmetic number, because the mean of its divisors is an integer number (50663652).

Almost surely, 2^201321203 is an apocalyptic number.

201321203 is a deficient number, since it is larger than the sum of its proper divisors (1333405).

201321203 is a wasteful number, since it uses less digits than its factorization.

201321203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333404.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 201321203 is about 14188.7703131737. The cubic root of 201321203 is about 586.0884627289.

Adding to 201321203 its reverse (302123102), we get a palindrome (503444305).

The spelling of 201321203 in words is "two hundred one million, three hundred twenty-one thousand, two hundred three".