12309143800 has 48 divisors (see below), whose sum is σ = 28691031960. Its totient is φ = 4911223680.

The previous prime is 12309143783. The next prime is 12309143801. The reversal of 12309143800 is 834190321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12309143801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1887 + ... + 156913.

Almost surely, 2^12309143800 is an apocalyptic number.

12309143800 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 12309143800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14345515980).

12309143800 is an abundant number, since it is smaller than the sum of its proper divisors (16381888160).

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

12309143800 is a wasteful number, since it uses less digits than its factorization.

12309143800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155440 (or 155431 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 12309143800 in words is "twelve billion, three hundred nine million, one hundred forty-three thousand, eight hundred".