131205435443 has 4 divisors (see below), whose sum is σ = 131210508000. Its totient is φ = 131200362888.

The previous prime is 131205435433. The next prime is 131205435467. The reversal of 131205435443 is 344534502131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344534502131 = 19 ⋅18133394849.

It is a cyclic number.

It is not a de Polignac number, because 131205435443 - 2¹² = 131205431347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131205435433) 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, 2497280 + ... + 2549277.

It is an arithmetic number, because the mean of its divisors is an integer number (32802627000).

Almost surely, 2^131205435443 is an apocalyptic number.

131205435443 is a deficient number, since it is larger than the sum of its proper divisors (5072557).

131205435443 is an equidigital number, since it uses as much as digits as its factorization.

131205435443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072556.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 131205435443 its reverse (344534502131), we get a palindrome (475739937574).

The spelling of 131205435443 in words is "one hundred thirty-one billion, two hundred five million, four hundred thirty-five thousand, four hundred forty-three".