133220713 has 2 divisors, whose sum is σ = 133220714. Its totient is φ = 133220712.

The previous prime is 133220699. The next prime is 133220719. The reversal of 133220713 is 317022331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127306089 + 5914624 = 11283^2 + 2432^2 .

It is an emirp because it is prime and its reverse (317022331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133220713 is a prime.

It is not a weakly prime, because it can be changed into another prime (133220719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66610356 + 66610357.

It is an arithmetic number, because the mean of its divisors is an integer number (66610357).

Almost surely, 2^133220713 is an apocalyptic number.

It is an amenable number.

133220713 is a deficient number, since it is larger than the sum of its proper divisors (1).

133220713 is an equidigital number, since it uses as much as digits as its factorization.

133220713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 133220713 is about 11542.1277501161. The cubic root of 133220713 is about 510.7290777065.

The spelling of 133220713 in words is "one hundred thirty-three million, two hundred twenty thousand, seven hundred thirteen".