131142142423441 has 4 divisors (see below), whose sum is σ = 131977442693812. Its totient is φ = 130306842153072.

The previous prime is 131142142423433. The next prime is 131142142423561. The reversal of 131142142423441 is 144324241241131.

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 86776751683216 + 44365390740225 = 9315404^2 + 6660735^2 .

It is a cyclic number.

It is not a de Polignac number, because 131142142423441 - 2³ = 131142142423433 is a prime.

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 131142142423441.

It is not an unprimeable number, because it can be changed into a prime (131142142423421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 417650134950 + ... + 417650135263.

It is an arithmetic number, because the mean of its divisors is an integer number (32994360673453).

Almost surely, 2^{131142142423441} is an apocalyptic number.

It is an amenable number.

131142142423441 is a deficient number, since it is larger than the sum of its proper divisors (835300270371).

131142142423441 is an equidigital number, since it uses as much as digits as its factorization.

131142142423441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835300270370.

The product of its digits is 73728, while the sum is 37.

Adding to 131142142423441 its reverse (144324241241131), we get a palindrome (275466383664572).

The spelling of 131142142423441 in words is "one hundred thirty-one trillion, one hundred forty-two billion, one hundred forty-two million, four hundred twenty-three thousand, four hundred forty-one".