123113309 has 8 divisors (see below), whose sum is σ = 134431680. Its totient is φ = 111816000.

The previous prime is 123113299. The next prime is 123113317. The reversal of 123113309 is 903311321.

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

It is a cyclic number.

It is not a de Polignac number, because 123113309 - 2¹² = 123109213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123113209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8552 + ... + 17870.

It is an arithmetic number, because the mean of its divisors is an integer number (16803960).

Almost surely, 2^123113309 is an apocalyptic number.

It is an amenable number.

123113309 is a deficient number, since it is larger than the sum of its proper divisors (11318371).

123113309 is a wasteful number, since it uses less digits than its factorization.

123113309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10531.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 123113309 is about 11095.6436947119. The cubic root of 123113309 is about 497.4716484268.

The spelling of 123113309 in words is "one hundred twenty-three million, one hundred thirteen thousand, three hundred nine".