123132320320 has 112 divisors (see below), whose sum is σ = 308461867200. Its totient is φ = 46748334080.

The previous prime is 123132320293. The next prime is 123132320371. The reversal of 123132320320 is 23023231321.

It is a junction number, because it is equal to n+sod(n) for n = 123132320291 and 123132320300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435075 + ... + 659965.

Almost surely, 2^123132320320 is an apocalyptic number.

123132320320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123132320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154230933600).

123132320320 is an abundant number, since it is smaller than the sum of its proper divisors (185329546880).

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

123132320320 is a wasteful number, since it uses less digits than its factorization.

123132320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224996 (or 224986 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 123132320320 its reverse (23023231321), we get a palindrome (146155551641).

The spelling of 123132320320 in words is "one hundred twenty-three billion, one hundred thirty-two million, three hundred twenty thousand, three hundred twenty".