131054552135345 has 4 divisors (see below), whose sum is σ = 157265462562420. Its totient is φ = 104843641708272.

The previous prime is 131054552135341. The next prime is 131054552135399. The reversal of 131054552135345 is 543531255450131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86082453031969 + 44972099103376 = 9278063^2 + 6706124^2 .

It is a cyclic number.

It is not a de Polignac number, because 131054552135345 - 2² = 131054552135341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131054552135345.

It is not an unprimeable number, because it can be changed into a prime (131054552135341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13105455213530 + ... + 13105455213539.

It is an arithmetic number, because the mean of its divisors is an integer number (39316365640605).

Almost surely, 2^{131054552135345} is an apocalyptic number.

It is an amenable number.

131054552135345 is a deficient number, since it is larger than the sum of its proper divisors (26210910427075).

131054552135345 is an equidigital number, since it uses as much as digits as its factorization.

131054552135345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26210910427074.

The product of its (nonzero) digits is 2700000, while the sum is 47.

The spelling of 131054552135345 in words is "one hundred thirty-one trillion, fifty-four billion, five hundred fifty-two million, one hundred thirty-five thousand, three hundred forty-five".