123302309 has 16 divisors (see below), whose sum is σ = 141704640. Its totient is φ = 106279680.

The previous prime is 123302261. The next prime is 123302317. The reversal of 123302309 is 903203321.

It is not a de Polignac number, because 123302309 - 2¹² = 123298213 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 (123302339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26822 + ... + 31080.

It is an arithmetic number, because the mean of its divisors is an integer number (8856540).

Almost surely, 2^123302309 is an apocalyptic number.

It is an amenable number.

123302309 is a deficient number, since it is larger than the sum of its proper divisors (18402331).

123302309 is a wasteful number, since it uses less digits than its factorization.

123302309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 123302309 is about 11104.1572845489. The cubic root of 123302309 is about 497.7260863100.

The spelling of 123302309 in words is "one hundred twenty-three million, three hundred two thousand, three hundred nine".