123031133120 has 112 divisors (see below), whose sum is σ = 343869873600. Its totient is φ = 41042018304.

The previous prime is 123031133119. The next prime is 123031133167. The reversal of 123031133120 is 21331130321.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123031133092 and 123031133101.

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 15 ways as a sum of consecutive naturals, for example, 659345 + ... + 825104.

Almost surely, 2^123031133120 is an apocalyptic number.

123031133120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123031133120 is an abundant number, since it is smaller than the sum of its proper divisors (220838740480).

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

123031133120 is a wasteful number, since it uses less digits than its factorization.

123031133120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484510 (or 1484500 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123031133120 its reverse (21331130321), we get a palindrome (144362263441).

The spelling of 123031133120 in words is "one hundred twenty-three billion, thirty-one million, one hundred thirty-three thousand, one hundred twenty".