231321112021313 has 8 divisors (see below), whose sum is σ = 238333814807400. Its totient is φ = 224406488994688.

The previous prime is 231321112021253. The next prime is 231321112021381. The reversal of 231321112021313 is 313120211123132.

It can be written as a sum of positive squares in 4 ways, for example, as 71584172112049 + 159736939909264 = 8460743^2 + 12638708^2 .

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 231321112021313 - 2¹⁰ = 231321112020289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231321112021913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24519935078 + ... + 24519944511.

It is an arithmetic number, because the mean of its divisors is an integer number (29791726850925).

Almost surely, 2^{231321112021313} is an apocalyptic number.

It is an amenable number.

231321112021313 is a deficient number, since it is larger than the sum of its proper divisors (7012702786087).

231321112021313 is an equidigital number, since it uses as much as digits as its factorization.

231321112021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49039879731.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 231321112021313 its reverse (313120211123132), we get a palindrome (544441323144445).

The spelling of 231321112021313 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, one hundred twelve million, twenty-one thousand, three hundred thirteen".