231310320443 has 4 divisors (see below), whose sum is σ = 231311352648. Its totient is φ = 231309288240.

The previous prime is 231310320431. The next prime is 231310320469. The reversal of 231310320443 is 344023013132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231310320443 - 2⁸ = 231310320187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231310328443) 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, 22778 + ... + 680543.

It is an arithmetic number, because the mean of its divisors is an integer number (57827838162).

Almost surely, 2^231310320443 is an apocalyptic number.

231310320443 is a deficient number, since it is larger than the sum of its proper divisors (1032205).

231310320443 is an equidigital number, since it uses as much as digits as its factorization.

231310320443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032204.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 231310320443 its reverse (344023013132), we get a palindrome (575333333575).

The spelling of 231310320443 in words is "two hundred thirty-one billion, three hundred ten million, three hundred twenty thousand, four hundred forty-three".