201011031231193 has 4 divisors (see below), whose sum is σ = 201011076925348. Its totient is φ = 201010985537040.

The previous prime is 201011031231187. The next prime is 201011031231277. The reversal of 201011031231193 is 391132130110102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2760210086544 + 198250821144649 = 1661388^2 + 14080157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201011031231193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201011031261193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15450246 + ... + 25312687.

It is an arithmetic number, because the mean of its divisors is an integer number (50252769231337).

Almost surely, 2^{201011031231193} is an apocalyptic number.

It is an amenable number.

201011031231193 is a deficient number, since it is larger than the sum of its proper divisors (45694155).

201011031231193 is an equidigital number, since it uses as much as digits as its factorization.

201011031231193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45694154.

The product of its (nonzero) digits is 972, while the sum is 28.

Adding to 201011031231193 its reverse (391132130110102), we get a palindrome (592143161341295).

The spelling of 201011031231193 in words is "two hundred one trillion, eleven billion, thirty-one million, two hundred thirty-one thousand, one hundred ninety-three".