200131001020 has 48 divisors (see below), whose sum is σ = 442984550400. Its totient is φ = 75738024000.

The previous prime is 200131000967. The next prime is 200131001023. The reversal of 200131001020 is 20100131002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 200131000988 and 200131001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200131001023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65260 + ... + 636019.

It is an arithmetic number, because the mean of its divisors is an integer number (9228844800).

Almost surely, 2^200131001020 is an apocalyptic number.

200131001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200131001020 is an abundant number, since it is smaller than the sum of its proper divisors (242853549380).

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

200131001020 is a wasteful number, since it uses less digits than its factorization.

200131001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702058 (or 702056 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 200131001020 its reverse (20100131002), we get a palindrome (220231132022).

The spelling of 200131001020 in words is "two hundred billion, one hundred thirty-one million, one thousand, twenty".