243434202100 has 72 divisors (see below), whose sum is σ = 537381174848. Its totient is φ = 95697676800.

The previous prime is 243434202097. The next prime is 243434202101. The reversal of 243434202100 is 1202434342.

It is a happy number.

243434202100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243434202101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2859145 + ... + 2943055.

Almost surely, 2^243434202100 is an apocalyptic number.

243434202100 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 243434202100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268690587424).

243434202100 is an abundant number, since it is smaller than the sum of its proper divisors (293946972748).

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

243434202100 is a wasteful number, since it uses less digits than its factorization.

243434202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84425 (or 84418 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 243434202100 its reverse (1202434342), we get a palindrome (244636636442).

The spelling of 243434202100 in words is "two hundred forty-three billion, four hundred thirty-four million, two hundred two thousand, one hundred".