131011220311445 has 8 divisors (see below), whose sum is σ = 158011502265144. Its totient is φ = 104276950988224.

The previous prime is 131011220311331. The next prime is 131011220311459. The reversal of 131011220311445 is 544113022110131.

It can be written as a sum of positive squares in 4 ways, for example, as 24265810969156 + 106745409342289 = 4926034^2 + 10331767^2 .

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 131011220311445 - 2¹⁴ = 131011220295061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66503156534 + ... + 66503158503.

It is an arithmetic number, because the mean of its divisors is an integer number (19751437783143).

Almost surely, 2^{131011220311445} is an apocalyptic number.

It is an amenable number.

131011220311445 is a deficient number, since it is larger than the sum of its proper divisors (27000281953699).

131011220311445 is a wasteful number, since it uses less digits than its factorization.

131011220311445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133006315239.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 131011220311445 its reverse (544113022110131), we get a palindrome (675124242421576).

The spelling of 131011220311445 in words is "one hundred thirty-one trillion, eleven billion, two hundred twenty million, three hundred eleven thousand, four hundred forty-five".