12303344240 has 80 divisors (see below), whose sum is σ = 31392990720. Its totient is φ = 4447100160.

The previous prime is 12303344239. The next prime is 12303344243. The reversal of 12303344240 is 4244330321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303344243) 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, 105101 + ... + 188819.

It is an arithmetic number, because the mean of its divisors is an integer number (392412384).

Almost surely, 2^12303344240 is an apocalyptic number.

12303344240 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 12303344240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15696495360).

12303344240 is an abundant number, since it is smaller than the sum of its proper divisors (19089646480).

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

12303344240 is a wasteful number, since it uses less digits than its factorization.

12303344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83910 (or 83904 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 12303344240 its reverse (4244330321), we get a palindrome (16547674561).

The spelling of 12303344240 in words is "twelve billion, three hundred three million, three hundred forty-four thousand, two hundred forty".