212313231313 has 4 divisors (see below), whose sum is σ = 212376744448. Its totient is φ = 212249718180.

The previous prime is 212313231293. The next prime is 212313231323. The reversal of 212313231313 is 313132313212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212313231313 - 2¹³ = 212313223121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212313231323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31751553 + ... + 31758238.

It is an arithmetic number, because the mean of its divisors is an integer number (53094186112).

Almost surely, 2^212313231313 is an apocalyptic number.

It is an amenable number.

212313231313 is a deficient number, since it is larger than the sum of its proper divisors (63513135).

212313231313 is an equidigital number, since it uses as much as digits as its factorization.

212313231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63513134.

The product of its digits is 1944, while the sum is 25.

Adding to 212313231313 its reverse (313132313212), we get a palindrome (525445544525).

The spelling of 212313231313 in words is "two hundred twelve billion, three hundred thirteen million, two hundred thirty-one thousand, three hundred thirteen".