201131111231213 has 8 divisors (see below), whose sum is σ = 208091756472600. Its totient is φ = 194172138635328.

The previous prime is 201131111231147. The next prime is 201131111231221. The reversal of 201131111231213 is 312132111131102.

It can be written as a sum of positive squares in 4 ways, for example, as 43266637196644 + 157864474034569 = 6577738^2 + 12564413^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 201131111231213 - 2¹² = 201131111227117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131111231243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417916718 + ... + 418397711.

It is an arithmetic number, because the mean of its divisors is an integer number (26011469559075).

Almost surely, 2^{201131111231213} is an apocalyptic number.

It is an amenable number.

201131111231213 is a deficient number, since it is larger than the sum of its proper divisors (6960645241387).

201131111231213 is an equidigital number, since it uses as much as digits as its factorization.

201131111231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836322751.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 201131111231213 its reverse (312132111131102), we get a palindrome (513263222362315).

The spelling of 201131111231213 in words is "two hundred one trillion, one hundred thirty-one billion, one hundred eleven million, two hundred thirty-one thousand, two hundred thirteen".