123534309 has 8 divisors (see below), whose sum is σ = 164765440. Its totient is φ = 82329696.

The previous prime is 123534269. The next prime is 123534319. The reversal of 123534309 is 903435321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123534309 - 2¹⁷ = 123403237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123534319) 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 in 7 ways as a sum of consecutive naturals, for example, 10764 + ... + 19050.

It is an arithmetic number, because the mean of its divisors is an integer number (20595680).

Almost surely, 2^123534309 is an apocalyptic number.

It is an amenable number.

123534309 is a deficient number, since it is larger than the sum of its proper divisors (41231131).

123534309 is an equidigital number, since it uses as much as digits as its factorization.

123534309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13259.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 123534309 is about 11114.5989131412. The cubic root of 123534309 is about 498.0380569616.

The spelling of 123534309 in words is "one hundred twenty-three million, five hundred thirty-four thousand, three hundred nine".