20201133131 has 4 divisors (see below), whose sum is σ = 20303677152. Its totient is φ = 20098589112.

The previous prime is 20201133109. The next prime is 20201133149. The reversal of 20201133131 is 13133110202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13133110202 = 2 ⋅6566555101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201133131 is a prime.

It is a super-2 number, since 2×20201133131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201133101) 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, 51271715 + ... + 51272108.

It is an arithmetic number, because the mean of its divisors is an integer number (5075919288).

Almost surely, 2^20201133131 is an apocalyptic number.

20201133131 is a deficient number, since it is larger than the sum of its proper divisors (102544021).

20201133131 is a wasteful number, since it uses less digits than its factorization.

20201133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102544020.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20201133131 its reverse (13133110202), we get a palindrome (33334243333).

The spelling of 20201133131 in words is "twenty billion, two hundred one million, one hundred thirty-three thousand, one hundred thirty-one".