133206709 has 2 divisors, whose sum is σ = 133206710. Its totient is φ = 133206708.

The previous prime is 133206691. The next prime is 133206727. The reversal of 133206709 is 907602331.

It is a balanced prime because it is at equal distance from previous prime (133206691) and next prime (133206727).

It can be written as a sum of positive squares in only one way, i.e., 101566084 + 31640625 = 10078^2 + 5625^2 .

It is a cyclic number.

It is not a de Polignac number, because 133206709 - 2⁹ = 133206197 is a prime.

It is a super-2 number, since 2×133206709² = 35488054645221362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133206809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66603354 + 66603355.

It is an arithmetic number, because the mean of its divisors is an integer number (66603355).

Almost surely, 2^133206709 is an apocalyptic number.

It is an amenable number.

133206709 is a deficient number, since it is larger than the sum of its proper divisors (1).

133206709 is an equidigital number, since it uses as much as digits as its factorization.

133206709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 133206709 is about 11541.5210869278. The cubic root of 133206709 is about 510.7111813387.

The spelling of 133206709 in words is "one hundred thirty-three million, two hundred six thousand, seven hundred nine".