123331013020 has 48 divisors (see below), whose sum is σ = 260654708160. Its totient is φ = 49016543744.

The previous prime is 123331013009. The next prime is 123331013021. The reversal of 123331013020 is 20310133321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123331013021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9910242 + ... + 9922678.

It is an arithmetic number, because the mean of its divisors is an integer number (5430306420).

Almost surely, 2^123331013020 is an apocalyptic number.

123331013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123331013020 is an abundant number, since it is smaller than the sum of its proper divisors (137323695140).

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

123331013020 is a wasteful number, since it uses less digits than its factorization.

123331013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15582 (or 15580 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 123331013020 its reverse (20310133321), we get a palindrome (143641146341).

The spelling of 123331013020 in words is "one hundred twenty-three billion, three hundred thirty-one million, thirteen thousand, twenty".