231301243204321 has 4 divisors (see below), whose sum is σ = 231301335157012. Its totient is φ = 231301151251632.

The previous prime is 231301243204277. The next prime is 231301243204351. The reversal of 231301243204321 is 123402342103132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13170911180625 + 218130332023696 = 3629175^2 + 14769236^2 .

It is a cyclic number.

It is not a de Polignac number, because 231301243204321 - 2¹¹ = 231301243202273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231301243204351) 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, 42093906 + ... + 47270491.

It is an arithmetic number, because the mean of its divisors is an integer number (57825333789253).

Almost surely, 2^{231301243204321} is an apocalyptic number.

It is an amenable number.

231301243204321 is a deficient number, since it is larger than the sum of its proper divisors (91952691).

231301243204321 is an equidigital number, since it uses as much as digits as its factorization.

231301243204321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91952690.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 231301243204321 its reverse (123402342103132), we get a palindrome (354703585307453).

The spelling of 231301243204321 in words is "two hundred thirty-one trillion, three hundred one billion, two hundred forty-three million, two hundred four thousand, three hundred twenty-one".