201331065 has 16 divisors (see below), whose sum is σ = 346909248. Its totient is φ = 99116736.

The previous prime is 201331063. The next prime is 201331073. The reversal of 201331065 is 560133102.

It is not a de Polignac number, because 201331065 - 2¹ = 201331063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201331063) 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, 516039 + ... + 516428.

It is an arithmetic number, because the mean of its divisors is an integer number (21681828).

Almost surely, 2^201331065 is an apocalyptic number.

It is an amenable number.

201331065 is a deficient number, since it is larger than the sum of its proper divisors (145578183).

201331065 is a wasteful number, since it uses less digits than its factorization.

201331065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032488.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 201331065 is about 14189.1178372723. The cubic root of 201331065 is about 586.0980326930.

Adding to 201331065 its reverse (560133102), we get a palindrome (761464167).

The spelling of 201331065 in words is "two hundred one million, three hundred thirty-one thousand, sixty-five".