134545309 has 2 divisors, whose sum is σ = 134545310. Its totient is φ = 134545308.

The previous prime is 134545303. The next prime is 134545319. The reversal of 134545309 is 903545431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95981209 + 38564100 = 9797^2 + 6210^2 .

It is a cyclic number.

It is not a de Polignac number, because 134545309 - 2⁹ = 134544797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134545303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67272654 + 67272655.

It is an arithmetic number, because the mean of its divisors is an integer number (67272655).

Almost surely, 2^134545309 is an apocalyptic number.

It is an amenable number.

134545309 is a deficient number, since it is larger than the sum of its proper divisors (1).

134545309 is an equidigital number, since it uses as much as digits as its factorization.

134545309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 134545309 is about 11599.3667499567. The cubic root of 134545309 is about 512.4162023611.

The spelling of 134545309 in words is "one hundred thirty-four million, five hundred forty-five thousand, three hundred nine".