213425311321 has 4 divisors (see below), whose sum is σ = 213455365632. Its totient is φ = 213395257012.

The previous prime is 213425311313. The next prime is 213425311331. The reversal of 213425311321 is 123113524312.

213425311321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213425311321 - 2³ = 213425311313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213425311321.

It is not an unprimeable number, because it can be changed into a prime (213425311331) 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, 15016501 + ... + 15030706.

It is an arithmetic number, because the mean of its divisors is an integer number (53363841408).

Almost surely, 2^213425311321 is an apocalyptic number.

It is an amenable number.

213425311321 is a deficient number, since it is larger than the sum of its proper divisors (30054311).

213425311321 is an equidigital number, since it uses as much as digits as its factorization.

213425311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30054310.

The product of its digits is 4320, while the sum is 28.

Adding to 213425311321 its reverse (123113524312), we get a palindrome (336538835633).

The spelling of 213425311321 in words is "two hundred thirteen billion, four hundred twenty-five million, three hundred eleven thousand, three hundred twenty-one".