12030031320 has 96 divisors (see below), whose sum is σ = 37727650800. Its totient is φ = 3068513536.

The previous prime is 12030031313. The next prime is 12030031327. The reversal of 12030031320 is 2313003021.

It is an interprime number because it is at equal distance from previous prime (12030031313) and next prime (12030031327).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12030031320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030031327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31275 + ... + 158234.

Almost surely, 2^12030031320 is an apocalyptic number.

12030031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12030031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18863825400).

12030031320 is an abundant number, since it is smaller than the sum of its proper divisors (25697619480).

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

12030031320 is a wasteful number, since it uses less digits than its factorization.

12030031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189569 (or 189542 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 12030031320 its reverse (2313003021), we get a palindrome (14343034341).

The spelling of 12030031320 in words is "twelve billion, thirty million, thirty-one thousand, three hundred twenty".