320241243313 has 4 divisors (see below), whose sum is σ = 323839459620. Its totient is φ = 316643027008.

The previous prime is 320241243307. The next prime is 320241243317. The reversal of 320241243313 is 313342142023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313342142023 = 31 ⋅10107811033.

It can be written as a sum of positive squares in 2 ways, for example, as 148404464289 + 171836779024 = 385233^2 + 414532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320241243313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320241243317) 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, 1799108020 + ... + 1799108197.

It is an arithmetic number, because the mean of its divisors is an integer number (80959864905).

Almost surely, 2^320241243313 is an apocalyptic number.

It is an amenable number.

320241243313 is a deficient number, since it is larger than the sum of its proper divisors (3598216307).

320241243313 is an equidigital number, since it uses as much as digits as its factorization.

320241243313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598216306.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 320241243313 its reverse (313342142023), we get a palindrome (633583385336).

The spelling of 320241243313 in words is "three hundred twenty billion, two hundred forty-one million, two hundred forty-three thousand, three hundred thirteen".