133311241 has 4 divisors (see below), whose sum is σ = 152355712. Its totient is φ = 114266772.

The previous prime is 133311203. The next prime is 133311287. The reversal of 133311241 is 142113331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133311241 - 2⁹ = 133310729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133311041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9522225 + ... + 9522238.

It is an arithmetic number, because the mean of its divisors is an integer number (38088928).

Almost surely, 2^133311241 is an apocalyptic number.

It is an amenable number.

133311241 is a deficient number, since it is larger than the sum of its proper divisors (19044471).

133311241 is an equidigital number, since it uses as much as digits as its factorization.

133311241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19044470.

The product of its digits is 216, while the sum is 19.

The square root of 133311241 is about 11546.0487180680. The cubic root of 133311241 is about 510.8447374315.

Adding to 133311241 its reverse (142113331), we get a palindrome (275424572).

The spelling of 133311241 in words is "one hundred thirty-three million, three hundred eleven thousand, two hundred forty-one".