131020122443 has 4 divisors (see below), whose sum is σ = 149737282800. Its totient is φ = 112302962088.

The previous prime is 131020122439. The next prime is 131020122479. The reversal of 131020122443 is 344221020131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344221020131 = 197 ⋅1747314823.

It is a cyclic number.

It is not a de Polignac number, because 131020122443 - 2² = 131020122439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131020125443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9358580168 + ... + 9358580181.

It is an arithmetic number, because the mean of its divisors is an integer number (37434320700).

Almost surely, 2^131020122443 is an apocalyptic number.

131020122443 is a deficient number, since it is larger than the sum of its proper divisors (18717160357).

131020122443 is an equidigital number, since it uses as much as digits as its factorization.

131020122443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18717160356.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 131020122443 its reverse (344221020131), we get a palindrome (475241142574).

The spelling of 131020122443 in words is "one hundred thirty-one billion, twenty million, one hundred twenty-two thousand, four hundred forty-three".