320123140243 has 8 divisors (see below), whose sum is σ = 323458421040. Its totient is φ = 316794220320.

The previous prime is 320123140237. The next prime is 320123140261. The reversal of 320123140243 is 342041321023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320123140243 - 2⁹ = 320123139731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320123143243) 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, 1489008 + ... + 1690381.

It is an arithmetic number, because the mean of its divisors is an integer number (40432302630).

Almost surely, 2^320123140243 is an apocalyptic number.

320123140243 is a deficient number, since it is larger than the sum of its proper divisors (3335280797).

320123140243 is a wasteful number, since it uses less digits than its factorization.

320123140243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180437.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 320123140243 its reverse (342041321023), we get a palindrome (662164461266).

The spelling of 320123140243 in words is "three hundred twenty billion, one hundred twenty-three million, one hundred forty thousand, two hundred forty-three".