123203402322 has 256 divisors, whose sum is σ = 334760767488. Its totient is φ = 29191726080.

The previous prime is 123203402293. The next prime is 123203402339. The reversal of 123203402322 is 223204302321.

It is a junction number, because it is equal to n+sod(n) for n = 123203402292 and 123203402301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 310335828 + ... + 310336224.

It is an arithmetic number, because the mean of its divisors is an integer number (1307659248).

Almost surely, 2^123203402322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123203402322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167380383744).

123203402322 is an abundant number, since it is smaller than the sum of its proper divisors (211557365166).

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

123203402322 is a wasteful number, since it uses less digits than its factorization.

123203402322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 123203402322 its reverse (223204302321), we get a palindrome (346407704643).

It can be divided in two parts, 123203 and 402322, that added together give a palindrome (525525).

The spelling of 123203402322 in words is "one hundred twenty-three billion, two hundred three million, four hundred two thousand, three hundred twenty-two".