131131021211 has 8 divisors (see below), whose sum is σ = 138859931664. Its totient is φ = 123403813120.

The previous prime is 131131021201. The next prime is 131131021223. The reversal of 131131021211 is 112120131131.

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 131131021211 - 2³⁴ = 113951152027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131131021211.

It is not an unprimeable number, because it can be changed into a prime (131131021201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265265 + ... + 576738.

It is an arithmetic number, because the mean of its divisors is an integer number (17357491458).

Almost surely, 2^131131021211 is an apocalyptic number.

131131021211 is a deficient number, since it is larger than the sum of its proper divisors (7728910453).

131131021211 is an equidigital number, since it uses as much as digits as its factorization.

131131021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851181.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131131021211 its reverse (112120131131), we get a palindrome (243251152342).

The spelling of 131131021211 in words is "one hundred thirty-one billion, one hundred thirty-one million, twenty-one thousand, two hundred eleven".