243430012100 has 144 divisors (see below), whose sum is σ = 614908351680. Its totient is φ = 82711756800.

The previous prime is 243430012097. The next prime is 243430012103. The reversal of 243430012100 is 1210034342.

243430012100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243430012097) and next prime (243430012103).

It is a super-2 number, since 2×243430012100² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (243430012103) 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 47 ways as a sum of consecutive naturals, for example, 1445924 + ... + 1605476.

Almost surely, 2^243430012100 is an apocalyptic number.

243430012100 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 243430012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307454175840).

243430012100 is an abundant number, since it is smaller than the sum of its proper divisors (371478339580).

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

243430012100 is a wasteful number, since it uses less digits than its factorization.

243430012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159670 (or 159663 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 243430012100 its reverse (1210034342), we get a palindrome (244640046442).

The spelling of 243430012100 in words is "two hundred forty-three billion, four hundred thirty million, twelve thousand, one hundred".