133455313 has 2 divisors, whose sum is σ = 133455314. Its totient is φ = 133455312.

The previous prime is 133455307. The next prime is 133455331. The reversal of 133455313 is 313554331.

Together with next prime (133455331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111999889 + 21455424 = 10583^2 + 4632^2 .

It is a cyclic number.

It is not a de Polignac number, because 133455313 - 2⁵ = 133455281 is a prime.

It is not a weakly prime, because it can be changed into another prime (133455383) 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 as a sum of consecutive naturals, namely, 66727656 + 66727657.

It is an arithmetic number, because the mean of its divisors is an integer number (66727657).

Almost surely, 2^133455313 is an apocalyptic number.

It is an amenable number.

133455313 is a deficient number, since it is larger than the sum of its proper divisors (1).

133455313 is an equidigital number, since it uses as much as digits as its factorization.

133455313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 28.

The square root of 133455313 is about 11552.2860508213. The cubic root of 133455313 is about 511.0286977269.

The spelling of 133455313 in words is "one hundred thirty-three million, four hundred fifty-five thousand, three hundred thirteen".