133103441 has 4 divisors (see below), whose sum is σ = 133151412. Its totient is φ = 133055472.

The previous prime is 133103419. The next prime is 133103449. The reversal of 133103441 is 144301331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12103441 + 121000000 = 3479^2 + 11000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133103441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133103449) 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, 19550 + ... + 25463.

It is an arithmetic number, because the mean of its divisors is an integer number (33287853).

Almost surely, 2^133103441 is an apocalyptic number.

It is an amenable number.

133103441 is a deficient number, since it is larger than the sum of its proper divisors (47971).

133103441 is an equidigital number, since it uses as much as digits as its factorization.

133103441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47970.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 133103441 is about 11537.0464591246. The cubic root of 133103441 is about 510.5791715788.

Adding to 133103441 its reverse (144301331), we get a palindrome (277404772).

The spelling of 133103441 in words is "one hundred thirty-three million, one hundred three thousand, four hundred forty-one".