203100123020 has 24 divisors (see below), whose sum is σ = 451599097824. Its totient is φ = 76461222656.

The previous prime is 203100122971. The next prime is 203100123067. The reversal of 203100123020 is 20321001302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 203100122986 and 203100123004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298676312 + ... + 298676991.

It is an arithmetic number, because the mean of its divisors is an integer number (18816629076).

Almost surely, 2^203100123020 is an apocalyptic number.

203100123020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203100123020 is an abundant number, since it is smaller than the sum of its proper divisors (248498974804).

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

203100123020 is a wasteful number, since it uses less digits than its factorization.

203100123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597353329 (or 597353327 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 203100123020 its reverse (20321001302), we get a palindrome (223421124322).

The spelling of 203100123020 in words is "two hundred three billion, one hundred million, one hundred twenty-three thousand, twenty".