231213313032313 has 4 divisors (see below), whose sum is σ = 231215767594228. Its totient is φ = 231210858470400.

The previous prime is 231213313032287. The next prime is 231213313032371. The reversal of 231213313032313 is 313230313312132.

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 107524394143609 + 123688918888704 = 10369397^2 + 11121552^2 .

It is a cyclic number.

It is not a de Polignac number, because 231213313032313 - 2⁹ = 231213313031801 is a prime.

It is a super-4 number, since 4×231213313032313⁴ (a number of 59 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231213313032113) 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 3 ways as a sum of consecutive naturals, for example, 1227139656 + ... + 1227328057.

It is an arithmetic number, because the mean of its divisors is an integer number (57803941898557).

Almost surely, 2^{231213313032313} is an apocalyptic number.

It is an amenable number.

231213313032313 is a deficient number, since it is larger than the sum of its proper divisors (2454561915).

231213313032313 is an equidigital number, since it uses as much as digits as its factorization.

231213313032313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454561914.

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

Adding to 231213313032313 its reverse (313230313312132), we get a palindrome (544443626344445).

The spelling of 231213313032313 in words is "two hundred thirty-one trillion, two hundred thirteen billion, three hundred thirteen million, thirty-two thousand, three hundred thirteen".