123320311120 has 20 divisors (see below), whose sum is σ = 286719723540. Its totient is φ = 49328124416.

The previous prime is 123320311117. The next prime is 123320311141. The reversal of 123320311120 is 21113023321.

It can be written as a sum of positive squares in 2 ways, for example, as 13603023424 + 109717287696 = 116632^2 + 331236^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770751865 + ... + 770752024.

It is an arithmetic number, because the mean of its divisors is an integer number (14335986177).

Almost surely, 2^123320311120 is an apocalyptic number.

123320311120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123320311120 is an abundant number, since it is smaller than the sum of its proper divisors (163399412420).

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

123320311120 is a wasteful number, since it uses less digits than its factorization.

123320311120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541503902 (or 1541503896 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123320311120 its reverse (21113023321), we get a palindrome (144433334441).

The spelling of 123320311120 in words is "one hundred twenty-three billion, three hundred twenty million, three hundred eleven thousand, one hundred twenty".