123120103309 has 16 divisors (see below), whose sum is σ = 144309876480. Its totient is φ = 102836672640.

The previous prime is 123120103307. The next prime is 123120103339. The reversal of 123120103309 is 903301021321.

It is a cyclic number.

It is not a de Polignac number, because 123120103309 - 2¹ = 123120103307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123120103307) 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, 6649 + ... + 496270.

It is an arithmetic number, because the mean of its divisors is an integer number (9019367280).

Almost surely, 2^123120103309 is an apocalyptic number.

It is an amenable number.

123120103309 is a deficient number, since it is larger than the sum of its proper divisors (21189773171).

123120103309 is an equidigital number, since it uses as much as digits as its factorization.

123120103309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503820.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 123120103309 in words is "one hundred twenty-three billion, one hundred twenty million, one hundred three thousand, three hundred nine".