213130232233 has 4 divisors (see below), whose sum is σ = 215327451220. Its totient is φ = 210933013248.

The previous prime is 213130232173. The next prime is 213130232257. The reversal of 213130232233 is 332232031312.

213130232233 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.

It can be written as a sum of positive squares in 2 ways, for example, as 87277703184 + 125852529049 = 295428^2 + 354757^2 .

It is a cyclic number.

It is not a de Polignac number, because 213130232233 - 2³³ = 204540297641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213130232198 and 213130232207.

It is not an unprimeable number, because it can be changed into a prime (213130232533) 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, 1098609348 + ... + 1098609541.

It is an arithmetic number, because the mean of its divisors is an integer number (53831862805).

Almost surely, 2^213130232233 is an apocalyptic number.

It is an amenable number.

213130232233 is a deficient number, since it is larger than the sum of its proper divisors (2197218987).

213130232233 is an equidigital number, since it uses as much as digits as its factorization.

213130232233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197218986.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 213130232233 its reverse (332232031312), we get a palindrome (545362263545).

The spelling of 213130232233 in words is "two hundred thirteen billion, one hundred thirty million, two hundred thirty-two thousand, two hundred thirty-three".