123203031120 has 120 divisors (see below), whose sum is σ = 445584329736. Its totient is φ = 30326897664.

The previous prime is 123203031113. The next prime is 123203031151. The reversal of 123203031120 is 21130302321.

123203031120 is a `hidden beast` number, since 1 + 2 + 320 + 30 + 311 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23970470976 + 99232560144 = 154824^2 + 315012^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123203031093 and 123203031102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6571999 + ... + 6590718.

Almost surely, 2^123203031120 is an apocalyptic number.

123203031120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123203031120 is an abundant number, since it is smaller than the sum of its proper divisors (322381298616).

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

123203031120 is a wasteful number, since it uses less digits than its factorization.

123203031120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13162749 (or 13162740 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123203031120 its reverse (21130302321), we get a palindrome (144333333441).

The spelling of 123203031120 in words is "one hundred twenty-three billion, two hundred three million, thirty-one thousand, one hundred twenty".