131121242440443 has 8 divisors (see below), whose sum is σ = 194253692504400. Its totient is φ = 87414161626944.

The previous prime is 131121242440429. The next prime is 131121242440457. The reversal of 131121242440443 is 344044242121131.

131121242440443 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 2 + 1 + 242 + 4 + 404 + 4 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (131121242440429) and next prime (131121242440457).

It is not a de Polignac number, because 131121242440443 - 2⁴ = 131121242440427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131121242440398 and 131121242440407.

It is not an unprimeable number, because it can be changed into a prime (131121242440343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2428171156278 + ... + 2428171156331.

It is an arithmetic number, because the mean of its divisors is an integer number (24281711563050).

Almost surely, 2^{131121242440443} is an apocalyptic number.

131121242440443 is a deficient number, since it is larger than the sum of its proper divisors (63132450063957).

131121242440443 is an equidigital number, since it uses as much as digits as its factorization.

131121242440443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856342312618 (or 4856342312612 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

Adding to 131121242440443 its reverse (344044242121131), we get a palindrome (475165484561574).

The spelling of 131121242440443 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, two hundred forty-two million, four hundred forty thousand, four hundred forty-three".