201020131311 has 8 divisors (see below), whose sum is σ = 268196163840. Its totient is φ = 133928759832.

The previous prime is 201020131283. The next prime is 201020131349. The reversal of 201020131311 is 113131020102.

It is a happy number.

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

It is not a de Polignac number, because 201020131311 - 2¹¹ = 201020129263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020131211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21159721 + ... + 21169218.

It is an arithmetic number, because the mean of its divisors is an integer number (33524520480).

Almost surely, 2^201020131311 is an apocalyptic number.

201020131311 is a deficient number, since it is larger than the sum of its proper divisors (67176032529).

201020131311 is a wasteful number, since it uses less digits than its factorization.

201020131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42330525.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 201020131311 its reverse (113131020102), we get a palindrome (314151151413).

The spelling of 201020131311 in words is "two hundred one billion, twenty million, one hundred thirty-one thousand, three hundred eleven".