123320313320 has 32 divisors (see below), whose sum is σ = 284238286920. Its totient is φ = 48124999680.

The previous prime is 123320313307. The next prime is 123320313329. The reversal of 123320313320 is 23313023321.

It can be written as a sum of positive squares in 4 ways, for example, as 32047444324 + 91272868996 = 179018^2 + 302114^2 .

It is not an unprimeable number, because it can be changed into a prime (123320313329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37596017 + ... + 37599296.

Almost surely, 2^123320313320 is an apocalyptic number.

123320313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123320313320 is an abundant number, since it is smaller than the sum of its proper divisors (160917973600).

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

123320313320 is a wasteful number, since it uses less digits than its factorization.

123320313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75195365 (or 75195361 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 123320313320 its reverse (23313023321), we get a palindrome (146633336641).

The spelling of 123320313320 in words is "one hundred twenty-three billion, three hundred twenty million, three hundred thirteen thousand, three hundred twenty".