123223313423240 has 64 divisors (see below), whose sum is σ = 277791569193600. Its totient is φ = 49193518952448.

The previous prime is 123223313423227. The next prime is 123223313423251. The reversal of 123223313423240 is 42324313322321.

It is a self number, because there is not a number n which added to its sum of digits gives 123223313423240.

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 15 ways as a sum of consecutive naturals, for example, 109276787 + ... + 110398653.

It is an arithmetic number, because the mean of its divisors is an integer number (4340493268650).

Almost surely, 2^{123223313423240} is an apocalyptic number.

123223313423240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123223313423240 is an abundant number, since it is smaller than the sum of its proper divisors (154568255770360).

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

123223313423240 is a wasteful number, since it uses less digits than its factorization.

123223313423240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127214 (or 1127210 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 123223313423240 its reverse (42324313322321), we get a palindrome (165547626745561).

The spelling of 123223313423240 in words is "one hundred twenty-three trillion, two hundred twenty-three billion, three hundred thirteen million, four hundred twenty-three thousand, two hundred forty".