231312231303313 has 4 divisors (see below), whose sum is σ = 231321666096820. Its totient is φ = 231302796509808.

The previous prime is 231312231303311. The next prime is 231312231303323. The reversal of 231312231303313 is 313303132213132.

It is a happy number.

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 37930472547984 + 193381758755329 = 6158772^2 + 13906177^2 .

It is a cyclic number.

It is not a de Polignac number, because 231312231303313 - 2¹ = 231312231303311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231312231303311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4717359978 + ... + 4717409011.

It is an arithmetic number, because the mean of its divisors is an integer number (57830416524205).

Almost surely, 2^{231312231303313} is an apocalyptic number.

It is an amenable number.

231312231303313 is a deficient number, since it is larger than the sum of its proper divisors (9434793507).

231312231303313 is an equidigital number, since it uses as much as digits as its factorization.

231312231303313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9434793506.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 231312231303313 its reverse (313303132213132), we get a palindrome (544615363516445).

The spelling of 231312231303313 in words is "two hundred thirty-one trillion, three hundred twelve billion, two hundred thirty-one million, three hundred three thousand, three hundred thirteen".