133412309 has 2 divisors, whose sum is σ = 133412310. Its totient is φ = 133412308.

The previous prime is 133412297. The next prime is 133412333. The reversal of 133412309 is 903214331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73582084 + 59830225 = 8578^2 + 7735^2 .

It is a cyclic number.

It is not a de Polignac number, because 133412309 - 2¹² = 133408213 is a prime.

It is a super-2 number, since 2×133412309² = 35597688385422962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133412369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66706154 + 66706155.

It is an arithmetic number, because the mean of its divisors is an integer number (66706155).

Almost surely, 2^133412309 is an apocalyptic number.

It is an amenable number.

133412309 is a deficient number, since it is larger than the sum of its proper divisors (1).

133412309 is an equidigital number, since it uses as much as digits as its factorization.

133412309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 133412309 is about 11550.4246242292. The cubic root of 133412309 is about 510.9738013511.

The spelling of 133412309 in words is "one hundred thirty-three million, four hundred twelve thousand, three hundred nine".