12031000030 has 32 divisors (see below), whose sum is σ = 25602920640. Its totient is φ = 3982675200.

The previous prime is 12031000027. The next prime is 12031000061. The reversal of 12031000030 is 3000013021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12030999980 and 12031000016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2961271 + ... + 2965330.

It is an arithmetic number, because the mean of its divisors is an integer number (800091270).

Almost surely, 2^12031000030 is an apocalyptic number.

12031000030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12031000030 is an abundant number, since it is smaller than the sum of its proper divisors (13571920610).

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

12031000030 is a wasteful number, since it uses less digits than its factorization.

12031000030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5926644.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 12031000030 its reverse (3000013021), we get a palindrome (15031013051).

The spelling of 12031000030 in words is "twelve billion, thirty-one million, thirty", and thus it is an aban number and an uban number.