243331423300 has 144 divisors (see below), whose sum is σ = 630617137920. Its totient is φ = 79684323840.

The previous prime is 243331423273. The next prime is 243331423327. The reversal of 243331423300 is 3324133342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243331423273) and next prime (243331423327).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11404242 + ... + 11425558.

It is an arithmetic number, because the mean of its divisors is an integer number (4379285680).

Almost surely, 2^243331423300 is an apocalyptic number.

243331423300 is a gapful number since it is divisible by the number (20) 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 243331423300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315308568960).

243331423300 is an abundant number, since it is smaller than the sum of its proper divisors (387285714620).

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

243331423300 is a wasteful number, since it uses less digits than its factorization.

243331423300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22070 (or 22063 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 243331423300 its reverse (3324133342), we get a palindrome (246655556642).

The spelling of 243331423300 in words is "two hundred forty-three billion, three hundred thirty-one million, four hundred twenty-three thousand, three hundred".