201143100231 has 20 divisors (see below), whose sum is σ = 307460776392. Its totient is φ = 130976900208.

The previous prime is 201143100227. The next prime is 201143100239. The reversal of 201143100231 is 132001341102.

201143100231 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 431 + 0 + 0 + 231 = 666.

It is not a de Polignac number, because 201143100231 - 2² = 201143100227 is a prime.

It is a super-2 number, since 2×201143100231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201143100239) 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 19 ways as a sum of consecutive naturals, for example, 28871496 + ... + 28878461.

Almost surely, 2^201143100231 is an apocalyptic number.

201143100231 is a deficient number, since it is larger than the sum of its proper divisors (106317676161).

201143100231 is an equidigital number, since it uses as much as digits as its factorization.

201143100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57750012 (or 57750003 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 201143100231 its reverse (132001341102), we get a palindrome (333144441333).

The spelling of 201143100231 in words is "two hundred one billion, one hundred forty-three million, one hundred thousand, two hundred thirty-one".