123223144 has 48 divisors (see below), whose sum is σ = 263581920. Its totient is φ = 53555040.

The previous prime is 123223103. The next prime is 123223181. The reversal of 123223144 is 441322321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45229 + ... + 47875.

It is an arithmetic number, because the mean of its divisors is an integer number (5491290).

Almost surely, 2^123223144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123223144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131790960).

123223144 is an abundant number, since it is smaller than the sum of its proper divisors (140358776).

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

123223144 is a wasteful number, since it uses less digits than its factorization.

123223144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710 (or 2683 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 123223144 is about 11100.5920562824. The cubic root of 123223144 is about 497.6195435058.

Adding to 123223144 its reverse (441322321), we get a palindrome (564545465).

The spelling of 123223144 in words is "one hundred twenty-three million, two hundred twenty-three thousand, one hundred forty-four".