213340432243 has 4 divisors (see below), whose sum is σ = 218301837688. Its totient is φ = 208379026800.

The previous prime is 213340432231. The next prime is 213340432267. The reversal of 213340432243 is 342234043312.

It is a happy number.

213340432243 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 is a cyclic number.

It is not a de Polignac number, because 213340432243 - 2²⁵ = 213306877811 is a prime.

It is a super-2 number, since 2×213340432243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213340402243) 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, 2480702658 + ... + 2480702743.

It is an arithmetic number, because the mean of its divisors is an integer number (54575459422).

Almost surely, 2^213340432243 is an apocalyptic number.

213340432243 is a deficient number, since it is larger than the sum of its proper divisors (4961405445).

213340432243 is an equidigital number, since it uses as much as digits as its factorization.

213340432243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961405444.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 213340432243 its reverse (342234043312), we get a palindrome (555574475555).

The spelling of 213340432243 in words is "two hundred thirteen billion, three hundred forty million, four hundred thirty-two thousand, two hundred forty-three".