123550031230320 has 160 divisors (see below), whose sum is σ = 391933096676352. Its totient is φ = 32178756750336.

The previous prime is 123550031230291. The next prime is 123550031230321. The reversal of 123550031230320 is 23032130055321.

It is a happy number.

It is a super-2 number, since 2×123550031230320² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123550031230321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199206937 + ... + 199826183.

Almost surely, 2^{123550031230320} is an apocalyptic number.

123550031230320 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 123550031230320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195966548338176).

123550031230320 is an abundant number, since it is smaller than the sum of its proper divisors (268383065446032).

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

123550031230320 is a wasteful number, since it uses less digits than its factorization.

123550031230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638639 (or 638633 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 123550031230320 its reverse (23032130055321), we get a palindrome (146582161285641).

The spelling of 123550031230320 in words is "one hundred twenty-three trillion, five hundred fifty billion, thirty-one million, two hundred thirty thousand, three hundred twenty".