133301213 has 4 divisors (see below), whose sum is σ = 133324860. Its totient is φ = 133277568.

The previous prime is 133301191. The next prime is 133301219. The reversal of 133301213 is 312103331.

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 95687524 + 37613689 = 9782^2 + 6133^2 .

It is a cyclic number.

It is not a de Polignac number, because 133301213 - 2⁸ = 133300957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133301191 and 133301200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133301219) 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, 2093 + ... + 16461.

It is an arithmetic number, because the mean of its divisors is an integer number (33331215).

Almost surely, 2^133301213 is an apocalyptic number.

It is an amenable number.

133301213 is a deficient number, since it is larger than the sum of its proper divisors (23647).

133301213 is an equidigital number, since it uses as much as digits as its factorization.

133301213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23646.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133301213 is about 11545.6144487853. The cubic root of 133301213 is about 510.8319281104.

Adding to 133301213 its reverse (312103331), we get a palindrome (445404544).

The spelling of 133301213 in words is "one hundred thirty-three million, three hundred one thousand, two hundred thirteen".