123313213213 has 4 divisors (see below), whose sum is σ = 123829168320. Its totient is φ = 122797258108.

The previous prime is 123313213211. The next prime is 123313213217. The reversal of 123313213213 is 312312313321.

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 123313213213 - 2¹ = 123313213211 is a prime.

It is a super-2 number, since 2×123313213213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123313213211) 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, 257977195 + ... + 257977672.

It is an arithmetic number, because the mean of its divisors is an integer number (30957292080).

Almost surely, 2^123313213213 is an apocalyptic number.

It is an amenable number.

123313213213 is a deficient number, since it is larger than the sum of its proper divisors (515955107).

123313213213 is an equidigital number, since it uses as much as digits as its factorization.

123313213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515955106.

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

Adding to 123313213213 its reverse (312312313321), we get a palindrome (435625526534).

The spelling of 123313213213 in words is "one hundred twenty-three billion, three hundred thirteen million, two hundred thirteen thousand, two hundred thirteen".