213230304123 has 4 divisors (see below), whose sum is σ = 284307072168. Its totient is φ = 142153536080.

The previous prime is 213230304061. The next prime is 213230304127. The reversal of 213230304123 is 321403032312.

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 213230304123 - 2¹³ = 213230295931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213230304093 and 213230304102.

It is not an unprimeable number, because it can be changed into a prime (213230304127) 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, 35538384018 + ... + 35538384023.

It is an arithmetic number, because the mean of its divisors is an integer number (71076768042).

Almost surely, 2^213230304123 is an apocalyptic number.

213230304123 is a deficient number, since it is larger than the sum of its proper divisors (71076768045).

213230304123 is an equidigital number, since it uses as much as digits as its factorization.

213230304123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71076768044.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 213230304123 its reverse (321403032312), we get a palindrome (534633336435).

The spelling of 213230304123 in words is "two hundred thirteen billion, two hundred thirty million, three hundred four thousand, one hundred twenty-three".