133441361 has 4 divisors (see below), whose sum is σ = 134622372. Its totient is φ = 132260352.

The previous prime is 133441309. The next prime is 133441369. The reversal of 133441361 is 163144331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163144331 = 7 ⋅23306333.

It can be written as a sum of positive squares in 2 ways, for example, as 52998400 + 80442961 = 7280^2 + 8969^2 .

It is a cyclic number.

It is not a de Polignac number, because 133441361 - 2¹⁸ = 133179217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133441361.

It is not an unprimeable number, because it can be changed into a prime (133441369) 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, 590336 + ... + 590561.

It is an arithmetic number, because the mean of its divisors is an integer number (33655593).

Almost surely, 2^133441361 is an apocalyptic number.

It is an amenable number.

133441361 is a deficient number, since it is larger than the sum of its proper divisors (1181011).

133441361 is a wasteful number, since it uses less digits than its factorization.

133441361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181010.

The product of its digits is 2592, while the sum is 26.

The square root of 133441361 is about 11551.6821718744. The cubic root of 133441361 is about 511.0108887173.

Adding to 133441361 its reverse (163144331), we get a palindrome (296585692).

The spelling of 133441361 in words is "one hundred thirty-three million, four hundred forty-one thousand, three hundred sixty-one".