323545213213 has 4 divisors (see below), whose sum is σ = 323590732380. Its totient is φ = 323499694048.

The previous prime is 323545213157. The next prime is 323545213247. The reversal of 323545213213 is 312312545323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312312545323 = 331 ⋅943542433.

It can be written as a sum of positive squares in 2 ways, for example, as 130843528729 + 192701684484 = 361723^2 + 438978^2 .

It is a cyclic number.

It is not a de Polignac number, because 323545213213 - 2⁹ = 323545212701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323545213813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22748920 + ... + 22763137.

It is an arithmetic number, because the mean of its divisors is an integer number (80897683095).

Almost surely, 2^323545213213 is an apocalyptic number.

It is an amenable number.

323545213213 is a deficient number, since it is larger than the sum of its proper divisors (45519167).

323545213213 is an equidigital number, since it uses as much as digits as its factorization.

323545213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45519166.

The product of its digits is 64800, while the sum is 34.

Adding to 323545213213 its reverse (312312545323), we get a palindrome (635857758536).

The spelling of 323545213213 in words is "three hundred twenty-three billion, five hundred forty-five million, two hundred thirteen thousand, two hundred thirteen".