123310110209 has 32 divisors (see below), whose sum is σ = 149470272000. Its totient is φ = 100239010560.

The previous prime is 123310110199. The next prime is 123310110299. The reversal of 123310110209 is 902011013321.

It is not a de Polignac number, because 123310110209 - 2¹⁶ = 123310044673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123310110299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 495767 + ... + 701715.

It is an arithmetic number, because the mean of its divisors is an integer number (4670946000).

Almost surely, 2^123310110209 is an apocalyptic number.

It is an amenable number.

123310110209 is a deficient number, since it is larger than the sum of its proper divisors (26160161791).

123310110209 is a wasteful number, since it uses less digits than its factorization.

123310110209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206105.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 123310110209 in words is "one hundred twenty-three billion, three hundred ten million, one hundred ten thousand, two hundred nine".