200131231001 has 12 divisors (see below), whose sum is σ = 228949706412. Its totient is φ = 173869663488.

The previous prime is 200131230973. The next prime is 200131231021. The reversal of 200131231001 is 100132131002.

It can be written as a sum of positive squares in 6 ways, for example, as 1995855625 + 198135375376 = 44675^2 + 445124^2 .

It is a de Polignac number, because none of the positive numbers 2^k-200131231001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200131231021) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 26630690 + ... + 26638203.

It is an arithmetic number, because the mean of its divisors is an integer number (19079142201).

Almost surely, 2^200131231001 is an apocalyptic number.

It is an amenable number.

200131231001 is a deficient number, since it is larger than the sum of its proper divisors (28818475411).

200131231001 is a wasteful number, since it uses less digits than its factorization.

200131231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53268940 (or 53268923 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 200131231001 its reverse (100132131002), we get a palindrome (300263362003).

Subtracting from 200131231001 its reverse (100132131002), we obtain a palindrome (99999099999).

The spelling of 200131231001 in words is "two hundred billion, one hundred thirty-one million, two hundred thirty-one thousand, one".