201331103131 has 4 divisors (see below), whose sum is σ = 211927477000. Its totient is φ = 190734729264.

The previous prime is 201331103123. The next prime is 201331103137. The reversal of 201331103131 is 131301133102.

201331103131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131301133102 = 2 ⋅65650566551.

It is a cyclic number.

It is not a de Polignac number, because 201331103131 - 2³ = 201331103123 is a prime.

It is a super-2 number, since 2×201331103131² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 10596373849 = 201331103131 / (2 + 0 + 1 + 3 + 3 + 1 + 1 + 0 + 3 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201331103099 and 201331103108.

It is not an unprimeable number, because it can be changed into a prime (201331103137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5298186906 + ... + 5298186943.

It is an arithmetic number, because the mean of its divisors is an integer number (52981869250).

Almost surely, 2^201331103131 is an apocalyptic number.

201331103131 is a deficient number, since it is larger than the sum of its proper divisors (10596373869).

201331103131 is a wasteful number, since it uses less digits than its factorization.

201331103131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10596373868.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 201331103131 its reverse (131301133102), we get a palindrome (332632236233).

The spelling of 201331103131 in words is "two hundred one billion, three hundred thirty-one million, one hundred three thousand, one hundred thirty-one".