20243123300 has 18 divisors (see below), whose sum is σ = 43927577778. Its totient is φ = 8097249280.

The previous prime is 20243123273. The next prime is 20243123311. The reversal of 20243123300 is 332134202.

It can be written as a sum of positive squares in 3 ways, for example, as 1392931684 + 18850191616 = 37322^2 + 137296^2 .

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 5 ways as a sum of consecutive naturals, for example, 101215517 + ... + 101215716.

Almost surely, 2^20243123300 is an apocalyptic number.

20243123300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20243123300 is an abundant number, since it is smaller than the sum of its proper divisors (23684454478).

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

20243123300 is a wasteful number, since it uses less digits than its factorization.

20243123300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202431247 (or 202431240 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20243123300 its reverse (332134202), we get a palindrome (20575257502).

The spelling of 20243123300 in words is "twenty billion, two hundred forty-three million, one hundred twenty-three thousand, three hundred".