213203421313 has 4 divisors (see below), whose sum is σ = 213205308228. Its totient is φ = 213201534400.

The previous prime is 213203421283. The next prime is 213203421331. The reversal of 213203421313 is 313124302312.

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 170512836624 + 42690584689 = 412932^2 + 206617^2 .

It is a cyclic number.

It is not a de Polignac number, because 213203421313 - 2²⁵ = 213169866881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213203421373) 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, 762388 + ... + 1003813.

It is an arithmetic number, because the mean of its divisors is an integer number (53301327057).

Almost surely, 2^213203421313 is an apocalyptic number.

It is an amenable number.

213203421313 is a deficient number, since it is larger than the sum of its proper divisors (1886915).

213203421313 is a wasteful number, since it uses less digits than its factorization.

213203421313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886914.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 213203421313 its reverse (313124302312), we get a palindrome (526327723625).

The spelling of 213203421313 in words is "two hundred thirteen billion, two hundred three million, four hundred twenty-one thousand, three hundred thirteen".