201316331 has 4 divisors (see below), whose sum is σ = 203309664. Its totient is φ = 199323000.

The previous prime is 201316321. The next prime is 201316333. The reversal of 201316331 is 133613102.

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 201316331 - 2¹⁰ = 201315307 is a prime.

It is a super-2 number, since 2×201316331² = 81056530254603122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201316333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996515 + ... + 996716.

It is an arithmetic number, because the mean of its divisors is an integer number (50827416).

Almost surely, 2^201316331 is an apocalyptic number.

201316331 is a deficient number, since it is larger than the sum of its proper divisors (1993333).

201316331 is a wasteful number, since it uses less digits than its factorization.

201316331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993332.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 201316331 is about 14188.5986270667. The cubic root of 201316331 is about 586.0837348844.

Adding to 201316331 its reverse (133613102), we get a palindrome (334929433).

It can be divided in two parts, 20131 and 6331, that added together give a palindrome (26462).

The spelling of 201316331 in words is "two hundred one million, three hundred sixteen thousand, three hundred thirty-one".