133206347 has 2 divisors, whose sum is σ = 133206348. Its totient is φ = 133206346.

The previous prime is 133206343. The next prime is 133206377. The reversal of 133206347 is 743602331.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (743602331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133206347 - 2² = 133206343 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133206343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66603173 + 66603174.

It is an arithmetic number, because the mean of its divisors is an integer number (66603174).

Almost surely, 2^133206347 is an apocalyptic number.

133206347 is a deficient number, since it is larger than the sum of its proper divisors (1).

133206347 is an equidigital number, since it uses as much as digits as its factorization.

133206347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 133206347 is about 11541.5054044089. The cubic root of 133206347 is about 510.7107187053.

Adding to 133206347 its reverse (743602331), we get a palindrome (876808678).

The spelling of 133206347 in words is "one hundred thirty-three million, two hundred six thousand, three hundred forty-seven".