12031030331020 has 24 divisors (see below), whose sum is σ = 25272685468800. Its totient is φ = 4810979413632.

The previous prime is 12031030331009. The next prime is 12031030331039. The reversal of 12031030331020 is 2013303013021.

It is a super-3 number, since 3×12031030331020³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89476065 + ... + 89610424.

It is an arithmetic number, because the mean of its divisors is an integer number (1053028561200).

Almost surely, 2^{12031030331020} is an apocalyptic number.

12031030331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12031030331020 is an abundant number, since it is smaller than the sum of its proper divisors (13241655137780).

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

12031030331020 is a wasteful number, since it uses less digits than its factorization.

12031030331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179089857 (or 179089855 counting only the distinct ones).

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

Adding to 12031030331020 its reverse (2013303013021), we get a palindrome (14044333344041).

The spelling of 12031030331020 in words is "twelve trillion, thirty-one billion, thirty million, three hundred thirty-one thousand, twenty".