133197241 has 2 divisors, whose sum is σ = 133197242. Its totient is φ = 133197240.

The previous prime is 133197223. The next prime is 133197247. The reversal of 133197241 is 142791331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74995600 + 58201641 = 8660^2 + 7629^2 .

It is a cyclic number.

It is not a de Polignac number, because 133197241 - 2¹¹ = 133195193 is a prime.

It is not a weakly prime, because it can be changed into another prime (133197247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66598620 + 66598621.

It is an arithmetic number, because the mean of its divisors is an integer number (66598621).

Almost surely, 2^133197241 is an apocalyptic number.

It is an amenable number.

133197241 is a deficient number, since it is larger than the sum of its proper divisors (1).

133197241 is an equidigital number, since it uses as much as digits as its factorization.

133197241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 133197241 is about 11541.1109084005. The cubic root of 133197241 is about 510.6990810272.

The spelling of 133197241 in words is "one hundred thirty-three million, one hundred ninety-seven thousand, two hundred forty-one".