123310240002 has 80 divisors (see below), whose sum is σ = 278830487232. Its totient is φ = 40728860640.

The previous prime is 123310239979. The next prime is 123310240051. The reversal of 123310240002 is 200042013321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 15551763 + ... + 15559689.

Almost surely, 2^123310240002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123310240002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139415243616).

123310240002 is an abundant number, since it is smaller than the sum of its proper divisors (155520247230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123310240002 is a wasteful number, since it uses less digits than its factorization.

123310240002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8805 (or 8796 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 123310240002 its reverse (200042013321), we get a palindrome (323352253323).

The spelling of 123310240002 in words is "one hundred twenty-three billion, three hundred ten million, two hundred forty thousand, two".