123312232152320 has 144 divisors (see below), whose sum is σ = 295814810387712. Its totient is φ = 49250889768960.

The previous prime is 123312232152301. The next prime is 123312232152371. The reversal of 123312232152320 is 23251232213321.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 2433560585 + ... + 2433611255.

Almost surely, 2^{123312232152320} is an apocalyptic number.

123312232152320 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 123312232152320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147907405193856).

123312232152320 is an abundant number, since it is smaller than the sum of its proper divisors (172502578235392).

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

123312232152320 is a wasteful number, since it uses less digits than its factorization.

123312232152320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53508 (or 53494 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 123312232152320 its reverse (23251232213321), we get a palindrome (146563464365641).

The spelling of 123312232152320 in words is "one hundred twenty-three trillion, three hundred twelve billion, two hundred thirty-two million, one hundred fifty-two thousand, three hundred twenty".