133213499 has 2 divisors, whose sum is σ = 133213500. Its totient is φ = 133213498.

The previous prime is 133213489. The next prime is 133213511. The reversal of 133213499 is 994312331.

It is a weak prime.

It is an emirp because it is prime and its reverse (994312331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133213499 - 2¹² = 133209403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133213489) 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, 66606749 + 66606750.

It is an arithmetic number, because the mean of its divisors is an integer number (66606750).

Almost surely, 2^133213499 is an apocalyptic number.

133213499 is a deficient number, since it is larger than the sum of its proper divisors (1).

133213499 is an equidigital number, since it uses as much as digits as its factorization.

133213499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 35.

The square root of 133213499 is about 11541.8152385143. The cubic root of 133213499 is about 510.7198587545.

The spelling of 133213499 in words is "one hundred thirty-three million, two hundred thirteen thousand, four hundred ninety-nine".