200105031643 has 8 divisors (see below), whose sum is σ = 218600017920. Its totient is φ = 181660648680.

The previous prime is 200105031631. The next prime is 200105031661. The reversal of 200105031643 is 346130501002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200105031643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200105031683) by changing a digit.

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, 12642555 + ... + 12658372.

It is an arithmetic number, because the mean of its divisors is an integer number (27325002240).

Almost surely, 2^200105031643 is an apocalyptic number.

200105031643 is a deficient number, since it is larger than the sum of its proper divisors (18494986277).

200105031643 is a wasteful number, since it uses less digits than its factorization.

200105031643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25301657.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 200105031643 its reverse (346130501002), we get a palindrome (546235532645).

The spelling of 200105031643 in words is "two hundred billion, one hundred five million, thirty-one thousand, six hundred forty-three".