201330331 has 2 divisors, whose sum is σ = 201330332. Its totient is φ = 201330330.

The previous prime is 201330329. The next prime is 201330341. The reversal of 201330331 is 133033102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201330331 - 2¹ = 201330329 is a prime.

It is a super-2 number, since 2×201330331² = 81067804361139122, which contains 22 as substring.

Together with 201330329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201330301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100665165 + 100665166.

It is an arithmetic number, because the mean of its divisors is an integer number (100665166).

Almost surely, 2^201330331 is an apocalyptic number.

201330331 is a deficient number, since it is larger than the sum of its proper divisors (1).

201330331 is an equidigital number, since it uses as much as digits as its factorization.

201330331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 201330331 is about 14189.0919723568. The cubic root of 201330331 is about 586.0973204392.

Adding to 201330331 its reverse (133033102), we get a palindrome (334363433).

The spelling of 201330331 in words is "two hundred one million, three hundred thirty thousand, three hundred thirty-one".