12143430320 has 80 divisors (see below), whose sum is σ = 32408074560. Its totient is φ = 4145236992.

The previous prime is 12143430317. The next prime is 12143430323. The reversal of 12143430320 is 2303434121.

It is an interprime number because it is at equal distance from previous prime (12143430317) and next prime (12143430323).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (12143430323) 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, 80894 + ... + 175586.

It is an arithmetic number, because the mean of its divisors is an integer number (405100932).

Almost surely, 2^12143430320 is an apocalyptic number.

12143430320 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 12143430320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16204037280).

12143430320 is an abundant number, since it is smaller than the sum of its proper divisors (20264644240).

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

12143430320 is a wasteful number, since it uses less digits than its factorization.

12143430320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94942 (or 94936 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12143430320 its reverse (2303434121), we get a palindrome (14446864441).

The spelling of 12143430320 in words is "twelve billion, one hundred forty-three million, four hundred thirty thousand, three hundred twenty".