133344313 has 2 divisors, whose sum is σ = 133344314. Its totient is φ = 133344312.

The previous prime is 133344301. The next prime is 133344331. The reversal of 133344313 is 313443331.

It is a happy number.

Together with next prime (133344331) 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., 84860944 + 48483369 = 9212^2 + 6963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133344313 is a prime.

It is not a weakly prime, because it can be changed into another prime (133344383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66672156 + 66672157.

It is an arithmetic number, because the mean of its divisors is an integer number (66672157).

Almost surely, 2^133344313 is an apocalyptic number.

It is an amenable number.

133344313 is a deficient number, since it is larger than the sum of its proper divisors (1).

133344313 is an equidigital number, since it uses as much as digits as its factorization.

133344313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 25.

The square root of 133344313 is about 11547.4808075181. The cubic root of 133344313 is about 510.8869775810.

Adding to 133344313 its reverse (313443331), we get a palindrome (446787644).

The spelling of 133344313 in words is "one hundred thirty-three million, three hundred forty-four thousand, three hundred thirteen".