133544213 has 8 divisors (see below), whose sum is σ = 145794816. Its totient is φ = 121312000.

The previous prime is 133544171. The next prime is 133544237. The reversal of 133544213 is 312445331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133544213 - 2⁶ = 133544149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133544263) 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 in 7 ways as a sum of consecutive naturals, for example, 13820 + ... + 21402.

It is an arithmetic number, because the mean of its divisors is an integer number (18224352).

Almost surely, 2^133544213 is an apocalyptic number.

It is an amenable number.

133544213 is a deficient number, since it is larger than the sum of its proper divisors (12250603).

133544213 is a wasteful number, since it uses less digits than its factorization.

133544213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9195.

The product of its digits is 4320, while the sum is 26.

The square root of 133544213 is about 11556.1331335356. The cubic root of 133544213 is about 511.1421448583.

Adding to 133544213 its reverse (312445331), we get a palindrome (445989544).

The spelling of 133544213 in words is "one hundred thirty-three million, five hundred forty-four thousand, two hundred thirteen".