131122231242545 has 16 divisors (see below), whose sum is σ = 158189252382720. Its totient is φ = 104336198750400.

The previous prime is 131122231242539. The next prime is 131122231242559. The reversal of 131122231242545 is 545242132221131.

It is not a de Polignac number, because 131122231242545 - 2⁶ = 131122231242481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131122231242499 and 131122231242508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91010 + ... + 16194219.

It is an arithmetic number, because the mean of its divisors is an integer number (9886828273920).

Almost surely, 2^{131122231242545} is an apocalyptic number.

It is an amenable number.

131122231242545 is a deficient number, since it is larger than the sum of its proper divisors (27067021140175).

131122231242545 is a wasteful number, since it uses less digits than its factorization.

131122231242545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16293856.

The product of its digits is 115200, while the sum is 38.

Adding to 131122231242545 its reverse (545242132221131), we get a palindrome (676364363463676).

The spelling of 131122231242545 in words is "one hundred thirty-one trillion, one hundred twenty-two billion, two hundred thirty-one million, two hundred forty-two thousand, five hundred forty-five".