133228301 has 2 divisors, whose sum is σ = 133228302. Its totient is φ = 133228300.

The previous prime is 133228289. The next prime is 133228309. The reversal of 133228301 is 103822331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128822500 + 4405801 = 11350^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 133228301 - 2⁶ = 133228237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133228309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66614150 + 66614151.

It is an arithmetic number, because the mean of its divisors is an integer number (66614151).

Almost surely, 2^133228301 is an apocalyptic number.

It is an amenable number.

133228301 is a deficient number, since it is larger than the sum of its proper divisors (1).

133228301 is an equidigital number, since it uses as much as digits as its factorization.

133228301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 133228301 is about 11542.4564543255. The cubic root of 133228301 is about 510.7387742434.

The spelling of 133228301 in words is "one hundred thirty-three million, two hundred twenty-eight thousand, three hundred one".