243130105100 has 36 divisors (see below), whose sum is σ = 531443396904. Its totient is φ = 96542167680.

The previous prime is 243130105081. The next prime is 243130105123. The reversal of 243130105100 is 1501031342.

It is a super-2 number, since 2×243130105100² (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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8859662 + ... + 8887061.

Almost surely, 2^243130105100 is an apocalyptic number.

243130105100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243130105100 is an abundant number, since it is smaller than the sum of its proper divisors (288313291804).

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

243130105100 is a wasteful number, since it uses less digits than its factorization.

243130105100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17746874 (or 17746867 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 243130105100 its reverse (1501031342), we get a palindrome (244631136442).

The spelling of 243130105100 in words is "two hundred forty-three billion, one hundred thirty million, one hundred five thousand, one hundred".