213100320233 has 4 divisors (see below), whose sum is σ = 213146681220. Its totient is φ = 213053959248.

The previous prime is 213100320161. The next prime is 213100320239. The reversal of 213100320233 is 332023001312.

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 65511426304 + 147588893929 = 255952^2 + 384173^2 .

It is a cyclic number.

It is not a de Polignac number, because 213100320233 - 2¹⁰ = 213100319209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213100320239) 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, 23173598 + ... + 23182791.

It is an arithmetic number, because the mean of its divisors is an integer number (53286670305).

Almost surely, 2^213100320233 is an apocalyptic number.

It is an amenable number.

213100320233 is a deficient number, since it is larger than the sum of its proper divisors (46360987).

213100320233 is an equidigital number, since it uses as much as digits as its factorization.

213100320233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46360986.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 213100320233 its reverse (332023001312), we get a palindrome (545123321545).

The spelling of 213100320233 in words is "two hundred thirteen billion, one hundred million, three hundred twenty thousand, two hundred thirty-three".