200123231020 has 24 divisors (see below), whose sum is σ = 420527044224. Its totient is φ = 79998195456.

The previous prime is 200123230999. The next prime is 200123231041. The reversal of 200123231020 is 20132321002.

It is an interprime number because it is at equal distance from previous prime (200123230999) and next prime (200123231041).

It is a junction number, because it is equal to n+sod(n) for n = 200123230985 and 200123231003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3161437 + ... + 3224116.

It is an arithmetic number, because the mean of its divisors is an integer number (17521960176).

Almost surely, 2^200123231020 is an apocalyptic number.

200123231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200123231020 is an abundant number, since it is smaller than the sum of its proper divisors (220403813204).

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

200123231020 is a wasteful number, since it uses less digits than its factorization.

200123231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6387129 (or 6387127 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 200123231020 its reverse (20132321002), we get a palindrome (220255552022).

The spelling of 200123231020 in words is "two hundred billion, one hundred twenty-three million, two hundred thirty-one thousand, twenty".