201530941 has 2 divisors, whose sum is σ = 201530942. Its totient is φ = 201530940.

The previous prime is 201530939. The next prime is 201531013. The reversal of 201530941 is 149035102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185096025 + 16434916 = 13605^2 + 4054^2 .

It is a cyclic number.

It is not a de Polignac number, because 201530941 - 2¹ = 201530939 is a prime.

It is a super-2 number, since 2×201530941² = 81229440360690962, which contains 22 as substring.

Together with 201530939, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201530911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100765470 + 100765471.

It is an arithmetic number, because the mean of its divisors is an integer number (100765471).

Almost surely, 2^201530941 is an apocalyptic number.

It is an amenable number.

201530941 is a deficient number, since it is larger than the sum of its proper divisors (1).

201530941 is an equidigital number, since it uses as much as digits as its factorization.

201530941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 201530941 is about 14196.1593749859. The cubic root of 201530941 is about 586.2919226010.

The spelling of 201530941 in words is "two hundred one million, five hundred thirty thousand, nine hundred forty-one".