231323041443 has 64 divisors (see below), whose sum is σ = 351211779072. Its totient is φ = 134359948800.

The previous prime is 231323041409. The next prime is 231323041447. The reversal of 231323041443 is 344140323132.

It is a happy number.

It is not a de Polignac number, because 231323041443 - 2¹⁰ = 231323040419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231323041443.

It is not an unprimeable number, because it can be changed into a prime (231323041447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27809121 + ... + 27817437.

It is an arithmetic number, because the mean of its divisors is an integer number (5487684048).

Almost surely, 2^231323041443 is an apocalyptic number.

231323041443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

231323041443 is a deficient number, since it is larger than the sum of its proper divisors (119888737629).

231323041443 is a wasteful number, since it uses less digits than its factorization.

231323041443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8764.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 231323041443 its reverse (344140323132), we get a palindrome (575463364575).

The spelling of 231323041443 in words is "two hundred thirty-one billion, three hundred twenty-three million, forty-one thousand, four hundred forty-three".