200131111020 has 24 divisors (see below), whose sum is σ = 560367111024. Its totient is φ = 53368296256.

The previous prime is 200131110989. The next prime is 200131111097. The reversal of 200131111020 is 20111131002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 200131110987 and 200131111005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667759199 + ... + 1667759318.

It is an arithmetic number, because the mean of its divisors is an integer number (23348629626).

Almost surely, 2^200131111020 is an apocalyptic number.

200131111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200131111020 is an abundant number, since it is smaller than the sum of its proper divisors (360236000004).

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

200131111020 is a wasteful number, since it uses less digits than its factorization.

200131111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335518529 (or 3335518527 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 200131111020 its reverse (20111131002), we get a palindrome (220242242022).

The spelling of 200131111020 in words is "two hundred billion, one hundred thirty-one million, one hundred eleven thousand, twenty".