131045331101 has 4 divisors (see below), whose sum is σ = 133517884572. Its totient is φ = 128572777632.

The previous prime is 131045331023. The next prime is 131045331121. The reversal of 131045331101 is 101133540131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101133540131 = 13 ⋅7779503087.

It can be written as a sum of positive squares in 2 ways, for example, as 50460883225 + 80584447876 = 224635^2 + 283874^2 .

It is a cyclic number.

It is not a de Polignac number, because 131045331101 - 2²² = 131041136797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131045331121) 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 3 ways as a sum of consecutive naturals, for example, 1236276656 + ... + 1236276761.

It is an arithmetic number, because the mean of its divisors is an integer number (33379471143).

Almost surely, 2^131045331101 is an apocalyptic number.

It is an amenable number.

131045331101 is a deficient number, since it is larger than the sum of its proper divisors (2472553471).

131045331101 is an equidigital number, since it uses as much as digits as its factorization.

131045331101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472553470.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 131045331101 its reverse (101133540131), we get a palindrome (232178871232).

The spelling of 131045331101 in words is "one hundred thirty-one billion, forty-five million, three hundred thirty-one thousand, one hundred one".