201331331 has 4 divisors (see below), whose sum is σ = 201369000. Its totient is φ = 201293664.

The previous prime is 201331327. The next prime is 201331337. The reversal of 201331331 is 133133102.

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 201331331 - 2² = 201331327 is a prime.

It is a super-2 number, since 2×201331331² = 81068609684463122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201331337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9161 + ... + 22058.

It is an arithmetic number, because the mean of its divisors is an integer number (50342250).

Almost surely, 2^201331331 is an apocalyptic number.

201331331 is a deficient number, since it is larger than the sum of its proper divisors (37669).

201331331 is an equidigital number, since it uses as much as digits as its factorization.

201331331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37668.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 201331331 is about 14189.1272106497. The cubic root of 201331331 is about 586.0982908118.

Adding to 201331331 its reverse (133133102), we get a palindrome (334464433).

The spelling of 201331331 in words is "two hundred one million, three hundred thirty-one thousand, three hundred thirty-one".