320203201 has 4 divisors (see below), whose sum is σ = 322323904. Its totient is φ = 318082500.

The previous prime is 320203199. The next prime is 320203243. The reversal of 320203201 is 102302023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320203201 - 2¹ = 320203199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320203271) 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, 1060125 + ... + 1060426.

It is an arithmetic number, because the mean of its divisors is an integer number (80580976).

Almost surely, 2^320203201 is an apocalyptic number.

It is an amenable number.

320203201 is a deficient number, since it is larger than the sum of its proper divisors (2120703).

320203201 is a wasteful number, since it uses less digits than its factorization.

320203201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120702.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320203201 is about 17894.2225592508. Note that the first 3 decimals coincide. The cubic root of 320203201 is about 684.1351267125.

Adding to 320203201 its reverse (102302023), we get a palindrome (422505224).

The spelling of 320203201 in words is "three hundred twenty million, two hundred three thousand, two hundred one".