123132231320 has 96 divisors (see below), whose sum is σ = 322461622080. Its totient is φ = 42192944640.

The previous prime is 123132231283. The next prime is 123132231337. The reversal of 123132231320 is 23132231321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3650372 + ... + 3683948.

It is an arithmetic number, because the mean of its divisors is an integer number (3358975230).

Almost surely, 2^123132231320 is an apocalyptic number.

123132231320 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 123132231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161230811040).

123132231320 is an abundant number, since it is smaller than the sum of its proper divisors (199329390760).

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

123132231320 is a wasteful number, since it uses less digits than its factorization.

123132231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35473 (or 35462 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123132231320 its reverse (23132231321), we get a palindrome (146264462641).

Subtracting from 123132231320 its reverse (23132231321), we obtain a palindrome (99999999999).

The spelling of 123132231320 in words is "one hundred twenty-three billion, one hundred thirty-two million, two hundred thirty-one thousand, three hundred twenty".